If so, what were the results and what worked well?
I did this 15+ years ago on a model corvette. It turned out real well. I think I used acetone to thin it. Anyway, I don't know if it's just regular enamel. For one it dries a bit faster. I also seem to remember trying enamel thinner first and ending up with a goopy mess. Then again it might vary by brand.It's enamel paint and they do air brush it at salon's.
They have an assortment of iridescent and metallic paints that I don't think you can get with regular model paint.