i did my spoiler, rear hitch, and roof rack a while ago with flat black and it was way worth it. The roof rack and spoiler were easy to take off and i just wrapped up the bumper and spare tire to paint the tow hitch. The roof rack I had to sand off the paint because it was chipping then i painted over it with some primer. Do it indoors if possible because the paint will oxidize on when exposed to air and you'll end up with all these little fish eyes