Be asked this before and will again incase anyone has solved the mysterious yellowing of the carpet in my 06. I have the mineral grey 06 with grey carpeting and as time goes on I'm finding that the whole carpet is yellowing! It hasn't been getting driven and under a canopy so it hasn't gotten wet inside. I've felt everywhere and no moisture what so ever. Why the heck is the carpeting yellowing or getting all these yellow stains!?!? :/