I have a fiberglass shower that was a very dark fuchia color (dark pink) and my brother painted it white with some special paint for the shower. Well the problem is that the paint is starting to chip away so it looks very bad. I would just like to remove the paint and decorate around the pink. Is there a thinner or striper that I can buy to make the task a bit easier and quicker and that won't ruin the fiberglass? Thank you for any suggestions.