I have a 98 Dakar Yellow EE with yellow piping along the edge of seats. On the driver seat however, due to the rubbing of seatbelt, the left shoulder section of the yellow piping is starting to wear off. Do you have a recommendation or remedy on how to restore the color? It might sound silly though but I don't think the touch-up paint will work (I thought I'd better ask...)? Is there a special paint or coloring for the leather?