After a nice long weekend, I found out this morning we had a damage claim on a 2003 Silver Mercedes E500 w/ 69K miles on it. The leather on the driver seat is now darker in a couple of places. The main spot is the lower back portion of the seat. It pretty much takes up the entire lower portion of the seat where one's lower back would be rested against. We cleaned and conditioned the entire seat and this is the only area that is quite a bit darker. Considering the location and that there is no other damage to any of the other seats in the car, I'm thinking the seat dye could have started deteriorating because of say sweat or something else over time. At this point I'm looking for any feedback as to what you all might think it would be and what you would do. Thank you in advance.