When painting plastic or vinyl, use a high quality, exterior, acrylic latex paint or a paint made specifically for plastic. While not required, priming the shutters with a latex primer before painting with acrylic latex paint can increase adhesion and allow better coverage by the top coat.hile it’s a good idea (though not required), to apply a latex primer before painting vinyl shutters with acrylic latex paint, the other option we mentioned, Krylon Fusion, should not be primed first. I’ve updated the article to indicate that. Thanks for the feedback.