For those of you who have changed your wheels to ones that use the Audi "spider" center caps, I have some info for you. The factory spider caps are a light grey in color. I found they were boring on my silver wheels on a silver car. So, after some research, I found you can order the same spider caps in black or charcoal grey! My car has "blackout" window tint, so i chose the black ones. Price was less than $50 for the set. They are even made in Italy (not China)! See photos. I find they add some interest to the rims.