I have to admit that I'm not really thrilled with the idea of leaving the color issue to random chance. The plan now is to take out all of the scum and then hope your own color happens to be ahead at that point?
See, it's not actually that simple, though. The thing is, unlike a scum group, we don't know everyone who's on our team, so if it got down to, say, 3 black pieces and 2 white pieces, it wouldn't be a strict loss for the white pieces. Now at that point it would probably be a good idea to roleclaim, but, as we all know what pieces are in a chess set (I hope!) making up a false claim would be easy enough.
Hmm... I wonder if he's worked in chess maneuvers somehow? Can pawns promote? Can kings and rooks castle? What about en passant?