I have existing recessed canister lights in my ceiling. Is it possible to paint recessed canister ceiling lights that are black in the recessed portion, surrounding the bulb. I would prefer them to be white since the ceiling is white. Can they be painted and if so, what kind of paint? If not, is the only option to have them replaced and can that be done without tearing apart the ceiling? Finally, is there some advantage to having black rather than white in the recessed portion of the fixture? Thank you.