I have 3 full cans of United gray paint left over from when I painted my lower rear bumper. The paint is almost spot on color match I'll get a couple pictures up when I get home of the color.
Sanded down the bumps, used filler and sandable primer 3 coats, sanded till its all even no bumps or imperfections, 4 coats of paint then 5 coats clear coat wait a week to dry then wet sand and buff