Camo if possible (It's a piece of military equipment after all - so nothing that sticks out too much!)
I'd love if the paint did influence the stats, so that say:
- camo gives points for stealth
- something that stands out offers points for speech or something (as it shows confidence IMHO)
- etc. etc.
greetings LAX
ps: I'd love it if we could add some kind of photo-reactive-layer to it (like a chameleon's skin!)