The order code in 1985 was 62, Camel tan.
Exact trim code varies by which type of seat and material.
base GP:
62B5 - notchback bench, Ripple cloth
62N5 - notchback bench, vinyl
62B9 - bucket, Ripple cloth
62B6 - 55-45 bench, Ripple cloth
GP LE:
62C5 - notchback bench, Pallex cloth
62C9 - bucket, Pallex cloth
62C6 - 55-45 bench, Pallex cloth
6226 - 55-45 bench, leather
GP Brougham:
62H6 - 55-45 bench, Prima cloth
If you are trying to order paint or dye to match, the dash board is a darker tan, code 62C and the seats/carpet/door panels etc are code 62A. You may find the paint suppliers listing the color as "saddle" instead of "camel", but as long as you use the correct code and model year you should be ok.