I am in the process of cleaning my wheels up and notice the coves on my 14 inch turbo wheels are a cream color. I looked in my enthusiasts guide and they show only black for the coves. I have seen grey but can't remember if that may have been a firebird. anyone know if this is a factory color? I can't find any wheel paint in the stores except for black or grey. my car is yellow and wondered if this may have been a yellow car only color for the wheels.