I did some research on painting the comm antennas and found out that you can paint them as long as you don't use paint with metal in it such as metal flake paint. I wasn't happy with the bright white antennas on my silver and black scheme. I wanted to paint them satin black to match. So I did. I used a two part epoxy rattle can.
I think they look a lot better. Oh, and I found out that they are painted a polyurethane white at the factory. After I hooked them back up I turned on the radios and they worked fine. I'll hook a test meter up to them anyway to verify.
