Over the weekend i noticed what appeared to be smudging inside the high beam housing. So when i took the cover off, i noticed that it appears that the reflective foil around the high beam bulb is actually coming off or turning a brown color. The outside of the housing is actually turning this red-brown color also. Has anyone had any experience with this? It definitely sounds like a warranty issue, but wanted to get some relevant feedback as my car is going in for service soon. I'm also curious why this happened, and how they actually "coat" the headlight housings in the first place....The other high beam housing looks like it has some imperfections in the coating also, although not visibly coming off or turning color (yet). Could these develop into a similar problem and should that one also be replaced?