thats mental ray definitely.., again i just woke. thats a differant effect than i thought you meant. not a complicated set up for a render specialist but im not one..,

ill get back later.., ive done this.., errr.., once!!! memory has faded since then.., last wek that is.., but mental ray is sort of new to me.

obviously the metallic paint node (one way).., but im not sure what the over rides are.