I just had these center caps made for me, and I was gauging interest for some sales. They are aluminum, and the SS is just painted red, so you could color it any color you please.
The wheels in the pic are midnight silver, and the bare aluminum matches it pretty well(as you can see by the picture).
Please let me know if you think it would be a good idea to try and sell these, and how much you would pay!
(I am not selling anything here, so please don't post offers! Thanks!)
EDIT: Pics should work now...