1968 Hubcap colors

[v8muscle]

I am restoring my original hubcaps on my 1968 GT500.
What color do I paint the "background" area of the dish section (behind the spokes)?
Is it a gloss or matt finish?
Is it the same color as the lug nut area on the spoke section?

[Coralsnake]

The area behind the spokes is flat black. The area between the spokes is cast iron gray and the spokes are argent

[Rodster-500]

Beautiful coffee table display piece.