Not sure about a dark color like green. For white painted over my dark blue original paint, the primer makes a big difference (for rustoleum). The few places that I sanded through the primer take many coats of thinned white gloss to cover (6-10 coats) any blue that shows through.. It's a pain to keep painting the whole car again since a few spots have blue color fading through, but the benefit is that the whole car gets smoother and glossier with each coat. This is after 2 coats of primer and then 2 coats of glossy white rusoleum.
Good Luck!




Marc's White Comet

Last edited by Mercurymarc; 12/30/08 09:14 PM.