Alright then, I have searched, and asked guys at the dealer and parts counter and tried the following...Wd-40 works but dulls the shine, contact cleaner works but attacks the plastic, leaving a white residue, simple green didn't work, S-100 didn't work, soap and hot water didn't work, Mr. Clean magic eraser works but dulls the shine...bad! I can kinda get the shine back by using Plexus, New bike in a can didn't bring the shine back at all. So, here I am, having spent lots of money and time trying to get the black marks, left by the black leather from my pants, off my green plastics without dulling the shine. I think that these plastics are screwed now and will never be shiny again. Do I have to put black plastics on this bike to remedy this sitch? Help needed... Jay.