I did some spray paint just to see how id like the look. Liked it at first, but decided i liked the stock color better and got if off easy.
If you like it then you can get them powder coated, cause these beauty rings arent cheap for some reason and i liked the ability to go back if i didnt like it.
You might want to try Plasti-Dip spray. Wipe the trim ring clean then use several coats. They make several colors so pick something close to what you want. If you decide you don't like it use the release agent and peel it off. No problem. If you like it go see your powdercoater. You can always play with your paint program too.