Raaj WIP - please help

A little while back I had an hour or two between the last lecture of the week and the train home, so - because my poll said people wanted to see more of my OCs - I started drawing Raaj This is the first time I've put a pic through so many revisions

Top pic is the original black-ballpoint sketch, the middle one is the really rough pencil sketch and the bottom one was traced (from the middle one), cleaned up and I started experimenting with the colours.

I need your help with this! I have never come up with a decent colour-scheme for Raaj and would like to offer 40 points to whoever comes up with the best colours for him. Here is a side-view of him [link] He is a 'fallen angel' who, because of his shame, never shows his face (so don't worry about thinking up eye-colours for him). He is designed to fight Enfers [link] (sorry, old pic) and lives in the Grey World between dimensions Thanks very much!

This'll eventually be scrapped but any critique or comments about the pic design would be very much appreciated, thanks!