first off, no... paint thinner will more or less, screw them up more.. i havnt tried it on mine, but my buddie did on his front turns on his del sol, so will alchol .. so unless you think you can do a really good job, or have an extra set, i wouldnt bother.
Thinner wont hurt it. I used finger nail polish remover to get the tint off of my tails when I had to redo them, just wash it good after you get the paint off. Bryan
i painted mine red, and if you take your time it shouldn't be that hard. paintthinner shouldn't hurt it if you use a rag and not just pour it on, but don't use lacquer thinner. adam