If you're taking it a paint/body shop, I wouldn't go buying a bunch of rattle cans and expect the shop to use them. You might get lucky but I doubt most shops would do that. I'd check with the shop beforehand. They should be able to mix the factory hardtop tan color (or any other color you choose) for application and will used catalyzed products through professional spray equipment to finish it, producing a more durable paint finish in the end.