i just recently used
Home Page | Leatherique Restoration Products REJUVINATOR and PRESTINE CLEAN on my seats..... I didn't have any areas where i thought dye was rubbing off, but i did have plenty of areas where the color from my jeans was darkening the leather. When i used leatherique it removed all of that, and a lot more. brought the seats back to new. The color, texture and feel is fantastic!
Maybe give that a try and see how the color looks.
If not, i think that same company makes dye also.
I'd love to see pictures of whats going on with your seats. so much more can be determined from a few photos.