I heard Radcliffe explicitly mention orange, and I've even seen them. But the point is, it was not make-up that made Voldemort's face. I'm not quite sure if they do have an award for the best computer rendered head, since the technology with which Voldemort's face was done is used for more things now.
I could not really call Voldemort an animated character (like Gollum from Lord of the Rings), so the MTV award for best animated character would be out of place too.