look at silver, and was originally going to keep wheels silver, but think the red calipers will really set them off. if not I will put everything back to standard at some point.
I also had my AMG's refinished in the same colour. Although as Howard says without a polished lip they can look dirty. In fact a friend of mine once commented, you forgot to clean your wheels!
Personally I like it
By the way, one mod that will really set of your wheels is the Black Roadter centre caps. They're exactly the same as the ones you have but in black. Have a look at the pictures in my gallery...