[Techno Duck]

I am pretty sure red and white (those are the two colors i remember) were not clear coated from the factory and are notorious for fading. My guards red car was also heavily faded, the worse areas are the areas that see direct sunlight..the roof, front and rear bumpers and the hood which is the worse. I was able to polish the paint by hand to a pretty decent luster but the hood and roof require constant attention before they get a hazy, cloudly look in the reflection.

I would consider trying a more abrasive compound, just be careful you dont burn through the paint!