I know he's black, he looks normal in the cutscenes and movie posters (well... you know what I mean by normal). But for some reason it's glitched and he's white during the game. I did manage to get him to flash black for just an instant, on the level where you ride a cart downhill, but I couldn't reproduce it. I'm on Mac OS X 10.6
Have some screenshots. http://s55.beta.photobucket.com/user/NightChime/library/White%20Gish