I could use some ideas here. I have a 2005 Yukon Xl. The back panels between the side glass and back window are starting to look a little faded. There is also "blueing" in some of the ridges. I am assuming that this is from a product that the last owner used on it. I prefer not to use a tire product as I hate when they streak down the paint. Being that the panels are a little textured I am afraid to put wax on them. Any Suggestions on a product to use on them? Here are some pics, as you can see it looks "whitish" in the grooves on the pics, the color is actually a blueish white. Thanks for the help!