I can only commend the original owner for being daring, but I find the execution disappointing because he forgot a few leather options.
Leather to sample interiors are IMHO
1) tricky because not a single plastic part may be forgotten, lest it ruins the whole interior
2) compromized, because the airbag module is necessarily black (or a standard color). So, it is recommended to go bicolor... but Porsche don't offer bicolor rear side panels (except black/sand, black/stone, black/terracotta)!