The driver's seat leather in the E28 was looking pretty grim, so I bought a bottle of dye that came with a small pot of crack filler and I went at it. The photo shows a slight metamerism between the seatback and the base of the seat, but to the human eye there is absolutely no color shift, and now the passenger and drivers seat match nicely in color and texture and overall wear, showing a worn-in patina rather than a worn out sadness.
