My new 2005 Camry has a strange discoloration on the lower plastic panel on the inside of the driver's side door. The car has a gray interior. The area is about 1.5 inches in an irregular shape and is somwhat lighter in color than the rest of the panel. It appears to be in the plastic and not on the surface. It did not respond to a light cleaning with soapy water that I tried. I have not yet brought it to the attention of the dealer. Has anybody seen anything like this and is there anything that I can do to remove (or hide) the discoloration?