Anyone out there know what will work on scuff marks on the dark charcoal leather? I've tried black shoe polish to no avail. I've got a few scuff marks on the side of the driver seat. I'm not sure if I caused them or if they were there when I got the car new. My watchband may have caught the side of the seat a few times while going back for the seatbelt. I've seen some leather repair kits on the web with specific colors that will match the leather in just about any car but I'm just not sure how well they will work and if $50 is worth it.