Valve cover questions

I was lucky enough to have Bob on here sell me a pair of finned valve covers for the 273 4 bbl engine in my 67 formula S fastback ( they had been stolen when the car was in storage years ago).
A couple of questions about freshening them up.
What is the correct paint to use on the valve covers? I know they were black wrinkle finish and I’m wondering what paint would be a good match.
Secondly, are the plastic spark plug wire insulators available out there? These have 1 left but the others are missing.