The difference between pre and post facelift seats is in the seat backs.
Mark 1 seats have a hard backboard behind them with the optional map pockets as seen from sitting in the back looking forward. The Mark 2 cars have soft, stitched rears and map pockets. The colour should be the same however across the two.
Examples below taken from different coloured interiors but to illustrate the style design finish of the rear seat backs.
Mark 1 with hard backboards (taken from a LWB car)
Mark 2 with soft stitched fabric to seat rears
