Transmission Inspection Cover

Anybody know if the inspection cover on a 1973 Dodge Dart Sport
340 is supposed to be painted and if so what color? I just got a replacement and plan to install this weekend and wanted to find
out so I can get it ready before I pull the starter.
I hope you don't have to, but if you have headers you may have to loosen them to get the inspection cover to clear when installing it.