Might be getting into the CoD category and provoke a huge anti-"Conduit of Duty" thing again. I would like something like that though, maybe you can change the color/pattern of your gun, or (if this is possible) make all of the colors on the gun negative (and maybe the bullets too, because that would look so badass *snipes with blue Strike Rifle ammo*).
The unfortunate news is, however, that it's pretty unlikely. Every weapon for every player would need a skin for other players to see it. So, where you would normally have, say, 16 weapon skins, you now have 256. They could make it so you pick your loadout, which would probably mean 32 skins for primary and secondary weapons, but that's still another 32 weapon textures to download every match, and it also means you can't change your "class" mid-game.
There's just too many limitations for this to work well online. It would be a nice little splitscreen quirk, though, if they can get it working well enough.
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