I was wondering what everyone is using to clean interior surfaces with. I need to clean my arm rest and door panel but dont want to change the color of the surface. I have a light colored interior (sort of beige). The arm rest has a dark spot where my elbow rests and I dont want to scrub it too hard so I am wondering if there is something to clean that with that will not change the color too much. The same for my door panel(s).