Hey Tony, that gray interior is awesome. Why would you want to change it? When I was looking for my X5, I, actually specifically did not want black or tan interior. I understand that it is question of personal preference but I, still think it is a good color. As far as rear seal/oil pan gasket tackle - dont jump the gun on that just yet.. You mentioned that VCG was recently replaced- the deal is that if VCG leaks in the rear, oil finds its way trough the ttansmission/engine join area and drips precisely looking like faulty rear seal. Now when VCG no longer leaks, have that area cleand up and wait and see if fresh oil comes out. It is recomended to change rear crankshaft seal every time gearbox/tranny is out and I did mine but as far as I understand, it is not a common issue or sometimes a symptom of failing CCV valve - it may holds higher pressure within engine, pushing oil out of, well, everywhere. If you havent done CCV recently, do that first and OIL filter housing gasket is more likely to be next on nessesity list rather rear crankshaft seal.

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2009 Range Rover Sport SC HST Limited Edition
2014 Infiniti Q50 AWD