I returned my last Droid because the battery cover and every other part on the phone with the same rubber feeling coating (sides and back) turned this horrid orange-brown color. I just got a brand new droid a week and a half ago and the same problem is occurring. The color change cannot be wiped off or removed. At first I thought it was because the model I returned ran very hot and had a handful of other software/hardware issues. This model actually works very well, however it looks extremely ugly. Has any one else run into this problem or know the cause of it? Another possibility is that it is reacting to hand-sanitizer, however I'd think the designers would have had the forethought not to use a material that reacts poorly to sanitizer since it has become a staple for most people. I love my Droid, but hate that it is black & poo colored. The aesthetics of this phone were just as important in my buying decision as the functions.