Hi Bill;
I too was looking for a good restoration color for the Coupe wheel centers.
I used SEM Ultra Gloss Trim Black #39563. Remember in the composition of
colors black has them all, and old paint fades with time allowing other
colors to show through the original true color. I had a new original Coupe
cap and it is Gloss Black. SEM Trim paint will adhere well and give good
service in all types of weather.
Bill