Our old 1985 4/4 suffered like this. When the seat springs went, I took the seats to Autotrim in Leicester. They replaced the springs and sorted the drivers seat bolster. I couldn't find the repair once they had done it. The seats were black on that car.
Our 2014 4/4 has Magnolia upholstery and the bolster has just started to lose the colour where I rub it getting in and out. I haven't had the courage to investigate a repair yet as I suspect that Magnolia will be much harder to match than black was on the old car.
So, to answer your question - yes on black leather with good results.
