Once you unlock them the rare variants of sets like the Highlander are darker camos. I don’t think colour matters too much (although the red german paratrooper set sticks out like a sore thumb) but I think shade does, anything too light or too dark will make it easier for the enemy to spot you.
I’m not saying it makes a huge difference but every little helps.
Either its taking most people a long time to unlock the stupider-looking stuff or most people are showing remarkable restraint, I must say.
Camo can do wonders if you use it right. of course it does nothing when youre moving, looking out a window or sitting next to a wall but with some debris and rubble around you a good camo can save your live. same with some green camo when youre hiding in grass or bushes. of course a gold weapon kind of defeats the use of camo but at least there is a way to use it properly