If I wanted to paint my rims I would want to plasti just in case I wanted to sell the jeep later, rather than if I wanted to repaint something that was already black like the hinges, I would paint with real paint.
94 YJ 2.5L Auto
"It's by doing whatever that one becomes whoever." -Remi
As I slowly "black out" some of my parts (grill and windshield hinge plates so far), I used spray-on Rustoleum bed liner. I love it, and will continue to use it for my other blackout projects in the future.