I have fairly new pant on my Piper airplane. After a trip to Wisconsin, both fuel drains starting leaking gas onto my wheel pants. The fuel (100LL) has a blue dye dissolved in the fuel so you can visually tell when the wrong fuel type has been pumped into the fuel tanks. As the fuel has evaporated, it has left the blue dye on the paint. What is the best way to remove this dye? I have been using GoofOff with some success and it does not seem to hurt the paint, but it takes several hours to remove. Can anyone recommend a better way to remove this stuff?