It's a 2006 RR with the tan seats. She got it 3 months ago and we noticed the driver seat keeps getting black streaks in it. Nothing we are wearing has black in it. I am think the dealer that sold it did some kind of coloring of the seat to hide imperfections. Does this sound logical? If so how do we fix it? Can you have the leather replaced or do you need to buy the whole seat? The black seems to wipe off but comes right back.