New interior colour schemes unavailable

But the B pillars are the stand-out design feature!

Exactly!!!!!!! Look at the Yeti sketch in my signature. Take away the B-pillar and all you have is a totally boring boxy station wagon. That B-pillar shark's fin is (together with the front fog lamps) the most distinctive thing on the Yeti. But each to their own.

As to the interior the OP wants: again each to their own but that fabric to my eyes is a bit much! It is different I grant you, but will be a nightmare to keep clean. The seat faces are also slightly whiter than the plastic trim giving the interior a very "globbered together" look IMHO.