Dying convertible top ?

Your local Dupont paint supplier should be able to mix you some vinyl paint. I've used it successfully on metal interior parts (especially low gloss areas such as lower dash frames), plastic trim, and soft vinyl parts such as door panels and vinyl tops. It can be mixed in low, medium, or high gloss. It is mixed with regular paint tints but the balancer and binder is replaced with vinyl resin. Sticks good if the surface is clean, and the color holds out well. It's also ready-to-spray so there's no need for reduction. Dupont recommends high gloss on vinyl tops but the last one I did appeared a little too glossy for my taste. If I do another one I may have them use half high gloss resin and half medium. I used a quart on the vinyl top but I would think a convertible top would take a little more, probably and qaurt and a half.
Good luck with whatever product you choose.
Dallas