Im not sure where this would belong in the forum, but some friends were smoking in the car and well, the leather got burnt. So now the front passenger seat has a brown mark near the left shoulder. It hasn't burnt all the way through, just a brown dot about the diameter of a cig butt. Does anyone know a way to fix this ? I was just thinking using very very very fine sand paper and sanding it down. Maybe 1000grit if they make those. Any products ??