I am the very happy owner (since March 8th, 2003) of a Sunset Orange Pearl, Honda Element EX. While I myself have not experienced any body panel discoloration (this is a Southern CA vehicle) it was suggested to me that when scratches or slight road pitting on the plastic body panels occurs, try using KIWI paste type, clear shoe polish, applied as you would regular car wax, it will or should "cover-up" and perhaps prevent further discoloration. As well, it will NOT leave that dried white powdery residue that auto wax leaves behind. It should also leave behind a "wax" coating preventing water spots and making it easier to remove road film and oils, as when tire shine products "spin-off" onto the plastic panels. I have not tried this myself, but would be interested in the results if anyone out there does feel the need to try it out!