Original Steel Wheel Color

Don't know if this helps but...

I have the original spare for my car including the 40 year old RedLine.

The wheel is all black with a body color face and body color over spray over the black inside (this is the natural over spray you would get if you painted the face of the wheel.

This, I believe is how it should be if your car came with the small "Dog Dish" caps.

The wheel would be all black if the car was delivered with one of the optional full wheel covers.