Krylon makes a new paint called Fusion that's better for plastics, they don't have manny colors but you could use a White Krylon fusion as a base coat and put any other type of paint/color as long as the white base is fully dry. The fusion is an oil base but like I said as kind as it's fully dryed/cured your good to go. I love the Krylon paints, their caps have a really nice fan and you can twist them to make a thin line. The bad thing is no matter how well you sand, base and clear their still going to chip, but still looks dope and nice post.