BP - love the interior swap. Were you able to sell your alcantara/cloth seats? I would love to swap out my sand interior for a coupe black/alcantara, but it's just too big a job for me to begin.
Also, I say keep the silver trim. I think it's a nice contrast and not a clash of colors. To me the cubes give a quintessentially ZHP identity, and according to math theorems, statistics and schematics, silver cubes are better than black cubes.