[Sunny Thaper]

Originally posted by Jeff_Rice
I talked with a guy who made movies once and he answered that very question. You light the scene with blue light, and use some white object, like a piece of paper, to tell the computer/camera what color white is. This will dull all the bright colors, making them look black or grey.

I was going to suggest something like that. But yeah, that is absolutely the best way. Your blue however is toooo blue, you need some yellow in it.