My 560SEL's paint is anthracite gray metallic clearcoat (172) but the replacement door check has a standard gold metal color. Since I want it to match the original paint, will spray paint or paint from a can stick to the metal?

Also, is it easy to remove the circular catch that holds the pin through the door check to the door?

__________________
1990 560SEL Anthracite Gray
1990 300SE Arctic White (parts)