Metal flake fade effect

[Beejoenz]

Any painters out here that know how to obtain that affect? I can't get a clear answer. A few people have said it's the actual paint whereas a few others have said it's the painter. I can't attach the example here but the tank goes from a silver flake to a copper flake obviously depending on the lighting.

[LinkBelt]

Color shifting flake. Check painthuffer.com I know they have a white color shift flake called blow.