I'm looking for some feedback also from other owners as to how they clean the doors panels areas that have that mat black textured surface. Our 2010 IS is only a month or so old but the areas I noted in the picture are getting a chalky white/grey shadowing or staining to them. What is the best way to clean them. Now that I hear about products like Lexol having actually removed some of the dye from the panels, I want to make sure I use the proper product on these areas.