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Phillosoph

Camouflage: Light, Dark, Neutral and Natural

Camouflage is about “not being seen”, which is one of the most fundamental of survival strategies. If you cannot become “invisible”, you may be able to appear insignificant, uninteresting or become easily “lost in a crowd”.
Good use of monotone neutrals. In some shots the actresses blend into the terrain.
You may have spent good money on the latest designer camouflage, but it is of no use to you hanging up at home. The most likely source of threat is other human-beings, and you are most at risk when other people are around.
Miyamoto Musashi tells us in the “Book of Five Rings”:
“In all forms of strategy, it is necessary to maintain the combat stance in everyday life and to make your everyday stance your combat stance. You must research this well.”
In clothing terms, what Musashi tells us means your everyday wear should be selected with a mind to decreasing your “visibility”.
Camouflage-patterned clothing does have a place in a prepper's wardrobe. There are, however, times when using camouflage-patterned clothing may be counter-productive. In cosmopolitan cities, clothing in camouflage or camouflage-like patterns may attract little attention. In other parts of the world, its use may attract unwelcome attention, or get you wrongly identified as military, paramilitary or a poacher.
Even if restricted to unpatterned clothing, there are strategies that we can adopt that will still decrease our visibility.
In previous blogs, I have touched upon a concept that might be called “camouflage without camouflage”. One can make oneself less observable by using a mix of non-camo-pattern clothing.
By using a variety of shades and hues, the basic identifiable human-shape can be broken up and become harder to distinguish. I have advised that you select clothing items in neutral and natural shades and colours.
While this remains good advice, a little more thought needs to be given to the system and some additional explanation may be warranted.

What is a Neutral Colour?

“Neutral colors are muted shades that appear to lack color but often have underlying hues that change with different lighting. Examples of neutral colors include beige, taupe, gray, cream, brown, black, and white. While neutral colors are not on the color wheel, they complement primary and secondary colors.”
On this blog I have stressed “neutral and natural”. Not all colours classed as neutrals are suitable for concealment.

Black

Regular readers should already know that “black is NOT a camouflage colour”.
In the movies, the bad guys, and often the hero will be dressed in black. It looks great on screen, and makes the actors stand out. This is exactly the opposite of the effect we want our clothes to have!
Even at night, black is to be avoided. In many partially lit conditions, black can be too dark, and stand out. Seldom is it dark enough for black clothing.
The special forces in Vietnam who dyed their gear black knew the colour would soon fade to a more useful dark grey.
Pure black clothing also tends to show the dirt, so you might like to rethink its usefulness as general wear.
If you want a dark suit for weddings and funeral, buy charcoal-grey rather than true black.

White

White is another colour that stands out and should be avoided. Like black, white really shows up any dirt.
The only time to wear white is when there is snow on the ground.
White garments used as snow camouflage should be uninsulated. If they are warm, you will be tempted to wear them all the time, they will quickly become dirty and will no longer be effective as snow camouflage.
Improvised Snow Camo
Obviously snow-camo should be unlined and of a material that is easily laundered.
Avoid white underwear if you can. Outer clothing can get damaged, and being exposed may expose you. Select underwear in neutral and natural tones.
If you have to wear a white shirt at a formal occasion, you may need a white undershirt to avoid the colour of the undergarment showing through.
If you have to wear a white shirt for work, carry a neutral colour scarf  or keffiyah you can cover it with when outdoors.

Blue

Not all shades of blue are neutral. Some that are neutral are not that natural. Neutral shades of blue or blue-grey can work in a winter or urban environment.
Light blue is generally a “cold” colour and can be used in the snow. Some snow-camouflage patterns use light blue and white to break up the shape.
Watch some nature footage of polar bears in the snow and ice and note how much the terrain appears blue, grey or blue-grey. Interestingly, the bears often appear yellow-white.
In an urban environment, light blue is often encountered as faded or mid-blue denim. Light blue is a good colour for a button-up shirt.
Darker blues are probably less useful for concealment. A blue blazer is supposedly an essential in a gentleman's wardrobe (I don't have one!). If you want one, select a neutral shade of navy. If nothing else, it will at least go better with whatever other colours you may wear with it.

Undershadow

Many animals have lighter colouration on their undersides. This makes the shadow that their bodies cast less distinctive and is an example of counter-shading. The animal appears less three-dimensional and blends in better with the surface that it is upon. Behaviours such as crouching low further reduce the shadow, and the animal will often remain immobile while it thinks it is observed.
Interestingly, many aquatic or amphibious animals show an abrupt change from light underside to darker upper. When swimming near the surface the dark upper makes the animal very difficult to spot. A predator looking up from beneath will find the light underside difficult to see against the sky seen through the water surface.
A light underbelly, or clothing to simulate it, is of little use to a human, since we spend a significant portion of our time upright and bipedal.
Keeping close to the ground and remaining still is good tactics, however. If you are concerned with being observed you should never be reluctant to crawl if necessary.
An interesting example of trying to apply counter-shading can be found in the book “Second World War British Military Camouflage”, p.27-8 by Isla Forsyth.
Solomon J. Solomon was one of the early pioneers of modern camouflage. During the First World War he proposed “alterations to [British] soldiers’ uniforms to reduce their visibility, such as the darkening of the soldier’s cap and the lightening of his trousers.”
Upper surfaces catch more light, and correspondingly, need to be darker. Body areas that are commonly thrown into shadow need to be lighter.
Watch some videos of soldiers in action, and you will see they often appear as man-shaped blobs, darker than their surroundings. Modern combat gear often uses exactly the same pattern for headgear, torso and legs. The chest area is often shaded by the position of the arms, yet often the equipment worn here is actually darker! Even in desert environments, soldiers wearing black or woodland-pattern body armour or load-bearing gear are still seen.

Illumination

When considering camouflage, a lot of attention is paid to colours and patterns. More attention should be paid to shade, light and contrast.
I have advised you to select items in natural and neutral shades, but how dark should they be?
If you have to hide in a dense wood, particularly at night, a mix of clothing items in medium or dark shades of natural and neutral colours may serve you. There will be lots of shadows, so use them. Camouflage is about behaviour as well as colouration.
Suppose you leave the wood to move across a neighbouring field. How well will your dark and medium-coloured clothes serve you then?
Even at night, the surfaces you move over may be relatively light. Grass and hay may reflect any available light, even that from the moon and stars. If you go prone, you may appear as a dark blob that attracts investigation. During the day you may be even more conspicuous.
Most of us spend a significant proportion of our time in urban areas. Even at night, this is an environment with many light or medium-shaded surfaces, and many areas are illuminated by artificial lighting. Dark outfits may make you stand out.
Discussions of camouflage often mention shade and shadow. Level of illumination in the surroundings is often not given that much attention. Clearly, if you are in a shadow, you are illuminated less, but it should be clear by now that light level has a much wider significance to camouflage and concealment.
In really deep shadow, what you wear probably matters little. There is no light, or more correctly, there is none escaping. Not all shadows or unlit areas will be this dark, however.
Stronger light can have interesting effects on concealment. Suppose someone is wearing a sand-colour outfit and lays down in a grass field on a sunny day.
You might think that someone in yellow would be easy to spot in a green field. One thing that would prevent this is that shade is more significant than hue. If the sand-coloured clothing appears a similar shade to the grass at the viewing distance, the figure can be over-looked. Another factor is that light materials reflect. Sunlight hitting the grass causes them to reflect green light. This green light may in turn be reflected from the light-coloured cloth, causing it to appear to have a green tint.
Effectively, your world should be viewed one of light and shadows.
Some areas are “shadow-dominant”. These include deep forests and jungles, and poorly-lit building interiors.
“Illuminated” areas include desert, open fields and many urban exterior areas.
This status may be changed by time of day, weather or season. At night, a wood may become even more shadow-dominant, yet in winter it may become better illuminated.
In shadow-dominant areas, clothing of medium-shade, with some dark items may be most effective. In better lit areas, lighter clothing may be less conspicuous.
Your movements may take you from light to dark areas or the reverse, so what should you wear? Having to deal with both light-dominant and shadow-dominant areas may explain why most attempts at a universal camouflage pattern have only ever proved partially effective.
In the early days of camouflage experimentation, a number of double-sided items were fielded or tested. Some had a spring-summer pattern on one side and a autumn/snow pattern on the other. Jungle/desert and green-dominant/brown-dominant were also tried.
The needs for the different patterns were thus either separated by season or by geography. As far as I know, no double-sided garments based on patterns for differing illumination levels have been tried, which is a shame.

Camouflage Patterns

For camouflage patterns for illuminated areas there are a number of options. Some of the patterns designed for desert use may prove useful in a wider range of environments. Make sure the pattern has sufficient element-size and contrast to disrupt shape and outline. Off the shelf, “tropentarn” seems to work well, although I would wish for a grey rather than green in the pattern.
Tropentarn Camouflage
Some urban patterns are good, although some use too much white or are too greyscale and could use some browns and tans.
Some newer patterns such as multicam use lots of colours and small elements, resulting in garments that appear a single colour beyond a few metres. This very much depends on the material and print. I have seen some camouflaged gaiters in these patterns that look like they might work. Polycotton trousers and shirts in the same pattern tend to blob-out at a relatively short distance. Generally I would avoid these patterns. They may be no more effective than cheaper single-colour items. Many of these patterns are also too green-dominant for a multi-terrain pattern.
For shadow-dominant terrain, you should probably consider “older” patterns such as US m81 woodland, flecktarn and British DPM. Canadian Cadpat is presumably intended for deep woods, although the green looks a little bright in some examples I have seen. Unfortunately, these patterns vary considerably. Browns can range from natural-looking shades to chocolate. Greens also vary and the lightest shade may be either light-green or a more useful tan. Contrast between elements and overall darkness may also vary.
Many of these patterns have too much green. While green is good for summer woodland and lush jungle, a pattern with more browns and greys would be better for other dark environments and seasons.
You may also encounter fashion/police patterns consisting of blacks and dark greys. These are too dark and lack sufficient contrast between the shades to disrupt the shape.
Ways to improve camouflage
Personal Camo-min

Camouflage without Camouflage

As was stated earlier, you cannot always wear a camouflage pattern. You may not have a garment such as camouflage parka (see below) with you.
How can you become less distinct wearing monotone clothing or “civvies gear”?
The first step is to mix it up! Different items should be different colours or shades. Obviously, what you select should be in neutral and natural colours suitable for your surroundings. Select medium and light shades unless the illumination level requires different.
Whilst you may not be able to wear a camouflage pattern, other patterns may have a disruptive effect, providing they do not use bright or primary colours. Some garments have pockets, collars or panels in contrasting colours, which may break up the shape.
Below is an example of the Russian Gorka wind-proof outfit. Some of these use camouflage, but they are also used in unpatterned cloth. Note how the two different shades and hues of neutral coloured panels break up the basic human shape.
Gorka two-tone suit
You probably know that several thin layers of clothing will keep you warmer than a single thick garment. You can also regulate your insulation more easily by removing layers. What many people do not appreciate is that a layered clothing system can be used to change your appearance and for camouflage.
For example, on the street you may be wearing a light-tan hoodie over a dark-grey bomber jacket. If you move into a darker area, you may move the bomber jacket to being your outer layer.
More layers often means more pockets. Thus you can carry a spare scarf or more than one hat, letting you further change your appearance.
Some hoodies or jackets are reversible. Generally I think you are better off with several thin non-reversible garments. They will cost you less and offer you more options.
If your garment is lined, ensure the lining is a neutral and natural colour too.
There is another advantage of having a wardrobe that is mainly neutral colours. Neutral colours go with just about anything. Most suggestions for a capsule wardrobe are based on having a versatile selection of garments in neutral colours.

Face and Hands

When James Bond wants to skulk around at night, he wears a black polo-neck. He never bothers to cover his face nor hands. He must leave a lot of fingerprints!
There is little point using camouflage if you do not cover your face and hands. Irrespective of your skin-shade, human skin can reflect. Hidden troops are often detected from the air since someone always has to look up at the spotter aircraft. Even at several thousand feet, an uncovered human face pops out and cries “Here we are!”.
Skin can be darkened and matted down by various means. Do not overlook local resources such as dirt, soot and soil. These do nothing to conceal your hair. Face-paint or dirt are also difficult to remove easily if you want to later appear innocuous.
You should carry suitable head and face coverings. A full-face balaclava/ski mask in a medium to dark shade of grey or brown would seem a good choice. However, some cops have been know to label these “ninja masks” and treat their possession as intent if they feel inclined.
Various face and head coverings can be constructed by combinations of suitably coloured and patterned bandannas, neck gaiters, scarves and knit-caps.
Gloves will be needed, and of a suitable shade and colour. Olive meraklon glove liners are a good start. Fingerless leather gloves (aka “recondo gloves”) are worth considering in milder climates. They provide some protection to the hands when climbing or crawling, so you may be more inclined to “go low” when needed. They can be found in tan-brown, or you can cut down old gloves that are surplus to requirements.

The Lower Body

There is no reason why your lower body has to wear a camouflage pattern that matches that of the upper body. The legs are a different shape to the torso and larger than the arms, so may need a different pattern to disrupt their identifiable shape. Using a different pattern for the legs may help break-up your overall recognisable human shape.
How well the concept of countershading can be applied to the human form probably warrants further investigation. Having your trousers lighter than your upper body is worth considering.
Desert patterns are suitable for trousers. UCP/ACU might also be worth trying for leg camouflage.
If we are considering monotone garments, our choices are probably various neutral tones of light-blues, greens, tans and greys.
Many style guides for capsule wardrobes recommend trousers that are lighter than the jacket.
Personally, I am wary of light-blue outside urban or winter environments. I actually don't own any jeans, wearing cargo trousers instead. Much of my EDC is in the pockets,
Greens are good for many rural settings, but may stand-out a little more than some other colours in urban areas. Some shades of green will stand-out in rural areas. Even neutral shades of green are less common in certain rural areas or seasons that one might expect.
Tans and greys are your most versatile choices for monotones. Tans and browns have the advantage that mud does not show up so much on them. On the other hand, the contrast of mud on grey trousers probably has a disruptive effect that breaks up the leg's shape.
Gaiters should be of a suitable camouflage pattern or neutral and natural colour. Since these are seldom worn in town, bows of textilage can be added to break up the shape. Ensure any materials used for textilage will not soak-up water.
Langdon-Davis had a lot to say about the distinctive appearance of black army boots. Footwear should be natural and neutral colours and matt finish when possible.
Black socks are supposed to make your legs look longer. I am not sure that works without black shoes and dark trousers. I generally wear boots so the socks are not visible.
Update: Recently I attended a funeral and noticed my boot tops were visible when seated, at least when wearing my suit trousers. Own at least one long pair of black socks for formal occasions. 
In town I often wear white cotton sport socks since they are cheaply available in quantity. In the field, spare socks may be used as extra carrying pouches tied to the outside of a pack. These should be neutral and natural colours.

Camouflaging Gear

The institutional military mind likes uniform, regular and symmetrical.
This may be part of the reason why personal camouflage has waxed and waned as a priority for soldiers.
Improving the camouflage of an item becomes unpopular when the additions must be stripped off for every parade or inspection. If you are outside of the military, then such restrictions will not limit you.
Previous blogs have discussed methods to improve the camouflage of your backpack. Similar methods can be applied to a chest-rig, contributing to the camouflage of your torso. Base colour for a chest-rig should be light or a desert pattern, since this area will often be shaded.

Camouflage Smock

A useful technique is to have a “camo-smock”. You put it on when you need a camouflage pattern. Roll it up and carry it when you want to appear non-military. You can carry more than one, and wear the most appropriate for the conditions.
Your bug-out outfit should include an item that can be used as a camo-smock.
My main camouflage item is a German Tropentarn desert-parka. Get this as big as possible so that it can form a camouflaged outermost layer over anything you may be wearing. There is a nice liner for it that makes it into a nice cold weather coat.
Without the liner, it is unlined so can be worn for camouflage in relatively hot weather. There are vent zips under the arms.
Being a parka, it comes down to mid-thigh so will fit over anything I might wear under it and partially conceals my legs and body shape.
Sleeves are long enough to conceal my hands and keep the wind and rain off them.
If this is a “field only” item, add some bows of textilage to the sleeves and shoulders.
How to add camoflage bows of textilage
The pockets of the smock/parka include items that can be used camouflage my hands, neck, face and head. Little point in camouflaging yourself without covering your extremities!
For darker conditions, I have a several metres of camouflaged scrimm that can be worn over the parka like a poncho. Bows of suitably covered material or scraps of camouflage cloth have been tied to the scrimm.
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Phillosoph

Kidney Warmers and Bellybands

Decades ago, when I first saw “Fists of Fury”, the scene above puzzled me. How did Bruce Lee’s character conclude the chef was Japanese just from seeing his undergarment?
The answer is that the Japanese are known for being fond of haramaki or “bellybands”.
Kidney Warmer/ Bellyband
The Germans are also fond of a similar garment. I have read of the Afrika Korps being issued “kidney-warmers”. The “Armed Forces of World War Two” by Andrew Molo clarifies:
“With the rapid drop in temperature at night, personnel wore a knitted woollen waist protector next to their skin, and a woollen greatcoat over their other clothing.”
I used to work with a colleague who had a German wife. I was apparently “mother’s wisdom” that you should wear a kidney warmer to keep your feet warm. Similarly, running around without socks could cause kidney and bladder problems.
Kidney warmer
It is interesting that diverse cultures in different parts of the world maintain that there is a link between kidneys and feet!
In a previous blog I mentioned that some American Civil War soldiers wore a flannel belt next to the skin.
Bellyband side view
“So what?” you may be asking. Many readers will own at least one set of long underwear. And sometimes the undershirt rides up and exposes the small of your back. A kidney warmer would have prevented this and also proved extra insulation.
Or perhaps, you are wearing a loose tee-shirt and find things can get a little drafty when the wind picks up.
Suppose you have to improvise cold weather clothing due to an unexpected change in the weather. Wrapping a spare scarf, keffiyeh or strip of material around your midriff could make all the difference.
Button around bellyband
There are a variety of styles of bellyband available. Some are elasticated tubes you either step into or pull over. Others are wrap-around and utilize velcro or other means.
If you have a snug-fitting tee-shirt or jumper that has seen better days, it should be easy to make your own kidney warmer to try the idea out.
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Phillosoph

Dressing for Bug-Out

When you reach for your bug-out bag (BOB), there are two questions that you should be asking yourself.
The first is: “Do I really need to go?” Escaping to safety is a meme that Hollywood has drummed into us. It makes for great movies, but in reality “stay put” is usually a more prudent survival strategy than “bug-out”.
That said, if the answer was genuinely “yes”, your second question should be: “What is the weather like?”

Clothes Maketh the Survivor

Your chances are going to be much better if you are dressed for the conditions that you are likely to encounter.
With your bug-out bag should be a selection of clothing items that you may possibly need.
Let us work on the assumption that the survivor must fend for themselves for 72 hours.
Sadly, there is no single outfit of clothing that can handle all possible conditions, hence the selection.

Underwear: Unmentionables for the Unthinkable

Let us start at the foundation, the underwear:

Hot Weather Undies

Shorts

If the weather or climate is hot, your underwear can simply be shorts and t-shirt.
Swimming shorts are a good choice. Those made from synthetics dry very fast, simplifying laundry.
I like the ones with a mesh-lining that keeps things in place and under control.
If it is really hot, the shorts also function as outerwear. Wearing them is also handy if you have to ford a stream.
A useful tip for underwear of all sorts is to have each set a different colour. This helps you keep track of which has been worn and which is clean. White tends to show the dirt, however.
Two pairs are sufficient for 72 hours. A wear and a spare. A third pair is handy in case things go more than a couple of days.

Tee-Shirts

For the tee-shirts, it is worth acquiring them in coolmax, since it is fast-drying. Again, get two or three, and have them in different colours.
For a 72 hour scenario, laundry is not a high priority. Plain cotton or polycotton tee-shirts can be found at reasonable prices in multiple packs. These are a good source of undershirts for short trips or your bug-out bag.
A pair of t-shirts in string-vest material are useful additions. In hot weather, they stop cloth pasting to your sweating flesh. In cold weather, they add an extra layer of warmth for very little additional load.
Sports Bra
A bra will be needed for them that needs them. I would imagine a sports bra would be a good choice for a bug-out situation. I have no experience wearing bras, so will offer no further advice.

Temperate Climate Underwear

For temperate conditions, we will need more underwear. We need to keep comfortable at night and on the rainy days, so will need something more substantial than what we usually wear at home or working indoors.

Long-Johns

You will need two pairs of long-johns. Polycotton are probably fine for mild weather. You do not want underwear that is too hot in temperate conditions. Polycotton is relatively easy to launder in long-term scenarios.
Polycotton Long-Johns

Long-Sleeve Undershirts

You will need a pair of undershirts, preferably long-sleeved.
Since your torso sweats more than your legs, have these in coolmax if you can. If you cannot get these, the same place that sold you the long-johns probably has long-sleeved tops in polycotton. Have each set of your long underwear a different colour.
Coolmax Long Sleeve
You can wear your temperate underwear with, or instead of, your hot weather items.
If it gets colder than expected, wear both sets of long undies.

Underwear for Cold Conditions

If the mercury has dropped, you will need “proper” thermal underwear.
In previous eras this meant wool. This is not so easy to find these days and may be beyond your budget.
Modern synthetics are much easier to wash. My personal choice is a set of Brynje long-johns and a matching long-sleeve top. These have a mesh construction, and seem more tolerant of extended (multi-day) wear than my merkalon set of more conventional construction.
If you are on a budget, you may be able to get along with a single set of thermals. If you live where winters can be expected to be cold, two sets are a good investment. On the other hand, if you live near the equator, thermal long-johns may be low on your list of priorities.
Your thermals can be combined with one or more sets of your temperate and hot-weather underwear.
Not strictly “underwear”, a wool or fleece shirt or a thin jumper may be worn over the underwear.
During the Second World War and Korean War, American soldiers would wear their woollen uniform trousers under their cotton field trousers. The modern equivalent are quilted trouser liners. A variety of these can be found on army surplus sites.

Organizing Your Undies

The underwear items suggested above are fairly low bulk, so a set of each of the hot and temperate kit should be packed in your bag. Bagged up, this probably makes a comfortable pillow at night.
The set(s) of thermals, and the second set of hot and temperate underwear should be stored close to your BOB rucksac. Put on what is suitable for the day. Decide if you want to take the rest or leave some behind.
Trouser-liners are bulky, so only pack or wear them if you think they are really needed.

Outerwear

Ok, now you are in your undies. What else to put on?
This will depend on whether you expect the weather to be hot, temperate or cold.

Hot Weather Outerwear

For hot weather, your outer layer should be something like a medium-weight shirt. Lighter shades handle strong sunlight better.
The shirt should be of a generous cut, for air circulation. This also allows warmer clothing to be worn beneath it.
It should be of a tight weave to resist mosquitoes and the wind.
It should have long-sleeves that can be rolled down for protection from insects.
Cotton or poly-cotton are acceptable for hot weather. Some of the newish synthetic microfibres may be sufficiently comfortable too.
A combat jacket can be worn instead of a shirt, but you do not want something that is too heavy or too hot. Probably best to avoid lined garments.
Have a spare shirt in your bag. The two may be worn together, as described previously.
For the legs, cargo trousers are good. They should be roomy enough to fit over trouser-liners and long underwear. Cargo pockets take your skin-level EDC kit.
If these trousers are always with your BOB, your SHTF survival knife/knives may already be threaded onto the belt.
Whether to pack spare trousers for hot-weather is up to you. If the trousers you are wearing get damaged, there are not many other garments that can substitute for them.
If you have a pair of cargo trousers that are past their prime, I suggest your ranger-roll them and retire them to your BOB as a permanent back-up pair.
If the weather is likely to be variable, it may be prudent to pack a thin jumper and possibly a light jacket or field coat.

Temperate Outerwear

For temperate conditions, outerwear is the same as for hot weather with the addition that something like a field jacket is more likely to be being worn.
The jacket should be large enough to fit over a fleece jacket and any additional layers of insulation you might don.
Field jackets such as the M65 can be fitted with a detachable liner, which is worth having.
A spare pair of trousers lets you double up if it is unexpectedly cold.
Fleeces are often seen worn as the outermost layer. They work much better if they are under something more windproof, such as a field jacket, waterproof or even just under a shirt.
Items such as tracksuit tops, hoodies and bomber jackets may be worn under or instead of the field jacket. The order of these may be varied to vary your appearance, which may be useful in certain conditions.
Several thin layers of insulation are more versatile than a lesser number of thick ones.

Cold Weather Outerwear

If it is cold out, ensure that you have the liner for your field jacket. If a bomber jacket or similar has a liner too, so much the better.
If it is cold, your field jacket will probably not be your outermost layer. Have a parka, and buy it big so that it will fit over your field jacket and anything else likely to be under it.

Insulation

I have talked about insulation. A common mistake is to use too much.
A good rule of thumb is that what you are wearing should leave you feeling slightly chilly when you are stationary. You will warm up once you are under way.
The suggestions above constitute a layer system. A layer system is a useful way to customize your insulation level before you set out.
Adding or removing items when under way may not be as practical as some writers make out. Try it halfway up an Icelandic mountain in a 60mph wind! (Been there, done that!)
When on the move, frequently vent your clothing to remove humid air.
When you stop, you can put on additional clothing or wrap yourself in a blanket, sleeping bag or poncho-liner.

Colours and Camouflage

In general, your bug-out clothing should be in natural or neutral shades.
Camouflage-patterned gear may attract unwelcome attention in some parts of the world. Choose greys, browns, tans and dull greens.
Do not buy underwear items in white. Avoid black items for outerwear, it tends to stand-out and gets hot in the sun.
Of course, in an emergency you may want to attract attention.
Your BOB should include a hi-viz tabard or jerkin, preferably the type with reflectors. One of your shemaghs, and possibly one of your warm hats, should be brightly coloured.
On the subject of reflectors, a reflective device that can be fitted to the back of your rucksac is useful if you find yourself hiking down a dark road. Bicycle stores are a good place to look for suitable items.
German Desert Parka
If I do need camouflage, I have a German desert parka. Being designed for desert use, it is comfortable in fairly hot weather. It is uninsulated and has ventilation zips under the arms.
I brought the biggest I could find so there is room for both air circulation and insulation. It is in Tropentarn, which is one of the better modern off-the-shelf camouflage patterns.
The garment is long enough to cover most things I might wear under it.
IThe parka is also a valid alternative to a field jacket. Jackets like the M65 can be too warm for milder conditions. (Officially the M65 was a “Cold Weather Field Coat”)
The desert parka can use the same liner as the German flectarn cold-weather parka, so the garment serves as camouflage cover, field jacket and/or CW parka.
German Parka Liner
I can wear the desert parka when I need camouflage. It is easily exchanged for another jacket and stowed in a pack when I do not.

And When It Rains

That covers hot, cold and temperate. What about wet?
Every bug-out-bag should include a rain parka.
These have numerous uses. They are reasonably priced and will often keep both you and your pack dry. They are easily vented. They are quick to put on, although this can become interesting if there is a bit of a wind!
A rain-poncho can also be used to construct a shelter for sleeping.
If your rain-ponch came in a little stuff sack for carrying, add two three-metre lengths of cord to this. The cord may be used for shelter construction or as a belt to stop the parka flapping in a strong wind.
There are some situations where a raincoat is preferable. A raincoat is in addition to the poncho, rather than an alternative.
A good raincoat packs up small when not in use, yet is large enough to cover and keep dry all the clothing that is serving as insulation. For me, this means it should be large enough to fit over my desert parka in winter mode with its liner fitted.
In a tactical scenario, a raincoat would fit under the camouflage layer but over the insulation. This is quieter, and also protects the rainproof from damage.
On the subject of insulation, remember a rainproof garment traps air so acts as both a windproof and an insulator.
If you put a rainproof on you may have to take something else off if you are to avoid overheating.
It is a good idea to periodocally vent clothing, even if using breathable waterproofs.
Simple, small-packing waterproofs became difficult to find for a while. Outdoor shops much preferred to sell more substantial and expensive breathable items. “Pac-a-macs” seem to be making a comeback on the internet, although many are in garish colours!
I have never had a problem with non-breathable waterproofs, since I understood about venting.
I also discovered that even expensive breathable fabrics have a finite life. The way you discover that is up is you get wet!

Boots

It is possible you own more than one pair of walking boots.
The pair you have with your bug-out bag should be suited to all-weathers and all-seasons.
You may have to traverse rubble and debris. Save the lightweight walkers for summer trips.
Boots for bugging out should be already broken in.
Personally, I like gaiters if I will be going cross-country.

Socks

You will need at least two pairs of socks, with three pairs or more preferable. Your feet are important. It is worth investing in good quality woollen socks for your BOB.
In certain conditions you may need to change socks several times during a day.
Sew a loop of ribbon to each so you can hang them on the outside of your bag to dry.
Choose sock in neutral and natural colours. You could use different coloured loops for each pair, although your nose will often tell you which set needs washing.
Spare socks can be used as mittens or carrying pouches.

Gloves

You will want several pairs of gloves.
Fingerless leather gloves provide protection with reduced loss of dexterity when in the brush or scrambling over rubble. These can be used with merkalon or silk glove liners.
On a hike in Iceland, an unexpected strongly gusting wind combines with relatively mild sub-sero conditions to create a -30 to -40 windchill. The hand holding my hiking pole was particularly exposed. Wearing fingerless leather gloves over glove liners avoided possibly serious injury.
Knitted gloves, woollen or acrylic, are not very stylish, but work well at keeping your hands warm and preserve some dexterity.
Good colours for gloves are mid-grey, khaki-drab and olive-drab.
Unlined leather work gloves can provide additional protection or another layer of insulation.
Leather work gloves may be used to protect you from thorns and rope burns. They may also be used as an oven glove to handle hot billy handles. They should be sized so they may be worn over woollen gloves and/or glove liners.
If desired, cuff-ribbing may be added to work gloves, or the top of old socks repurposed as such.
In cold weather, better insulated gloves and/or mittens may be required.
Add ribbon or cord loops to each glove so you can stash them on your snaplink when you remove them.
In bad weather, run a cord down your sleeves and tie the ends to your gloves. You may feel like a toddler, but this is better than a gust of wind taking a glove and the risk of frostbite!
The pockets of my outdoor jackets usually carry at least one pair of gloves. Keep your other gloves where they can be easily accessed, such as in an external pocket of your pack. It is not a bad idea to have all of these gloves in their own “glove bag”.

Hats and Scarves

You will need a hat to keep the sun off. I like a boonie hat, myself.
When the weather demands you wear your hood up, a suitably coloured baseball hat will be convenient.
Whatever your personal choice, add a cord so the wind does not steal it from you.
For cold weather, I tend to favour a watch-cap or folded headover. It is worth carrying more than one of these. If it is really cold, you can double up on hats. A headover or watch-cap may be combined with a boonie or ball-caps, as needed.
A tennis-headband may be useful in hot weather. A bandanna worn across the forehead is a possible substitute.
“You are not fully dressed without a scarf!” Bandannas, shemagh, neck-gaiters and a long woollen scarf also have a place in your BOB or coat pockets.

Protection

A bug-out bag is there for emergencies and disasters.
A dust mask may prove useful, as may goggles. As well as dust and sandstorms, explosions and collapsing building produce lots of dust. This can have immediate and long-term health effects. Sunglasses also protect against snowglare.
Kneepads should fit under the trousers. This is better for camouflage and air circulation.
A headnet against biting insects is well worth the (negligible) weight. It may be uses as an improvised fishing net or carrier bag.
In certain situations, head protection may be prudent. Volcanic activity may make it literally rain rocks. High winds turn roof tiles and other everyfay objects into deadly missiles.  Head protection may be a lightweight hockey or skateboard helmet, or a construction hard-hat.

Checklist

Have a checklist. When you are under stress or in a hurry you are unlikely to remember everything you need.
Some of the items for your bug-out outfit will be permanently packed in your bug-out bag. Items you intend to wear while carrying the bag may be stored near the bag.
For many of us, however, it is not practical to have a full, dedicated bug-out bag and outfit. Some items we need will be in general use. Other items may have been fished out of the BOB for a camping trip or for use during a cold-spell.
Hence, have a checklist of the items you want in your bug-out outfit so you can grab those that may not be there.