Exp has a skin for the body its mainly the back pack its a bet bigger and has EXP on it seen it in DF1 if you ask them, and as for DFBHD its being mod enable soon so skins maybe a go for it. it should be use only when other members seen it and there nothen bad about it. that can mark other players in the game to see easyer's to find and kill.
^eATER^DFS
thats looks a bet on the rear side nice work