I did not recognise the seat as a 91 Cooper as the although the pattern is correct the style is not.
This came from Somerfords webpage.
Mini Racing Green, Flame Red, Checkmate
1989-91
The limited edition Racing Green, Flame Red and Checkmate used Black Crayons seat covers which are still in production and listed here (the 'mainstream' carburetter Cooper of 1990-91 used Black Crayons fabric, too, but in a different seat cover design which is not currently in production). The good availability of seat covers and the corresponding interior trim panels makes Black Crayons an ideal interior trim package with which to make over and update a 1980s Mini City or Mayfair.
The mainstream in my opinion is the best model Rover produced as it is the closest to the original Cooper S. Fairly spartan, fitted with a carburetor and most importantly for a lot of people, myself included it does not have a sunroof.
I have owned 3 RSP`s and 6 or 7 mainstreams and still have an original unrestored car in virtually A1 condition that i`ve owned for 26 years.