Markos,
Look closely at the seat belt from the back seat to the front. It is supposed to go horizontally from the tensioner at about the same level as the wood trim to the 'hanger' just behind the door opening (bolt for the hanger actually goes through the wood. In this car, it looks like the belt runs diagonally to somewhere near the B column. Certainly earlier car seats, don't understand the seat belt installation.
I too like the color. Kind of reminds me of that first e9 I ever saw - NYC Auto Show 1970. Nachtblau with white interior. Lusted immediately, took 3 years to find one - but an auto 2..8 with black interior. Lasted until I found the '73 Nachtblau manual with tan interior in '75. That lasted until the rust worms started winning ('81).
But, the trunk 'lining' in what appears to be tan fabric/carpet just 'isn't right' for the rest of the trim