Robin Williams or Ronald McDonald?

Is Robin Williams dyeing his hair ruby red for his latest role in the upcoming action film Ronald McDonald vs. The Burger King: This time it's deep-fried and personal ?

Or is he just an old dude with graying hair, who has a bad colorist? It's a good thing he is contractually obligated to do voice-over work in every single animated film, it keeps us from having to look at him.