John,
Sorry to hear about the Jim Carter problem. I don't have answers to many of your questions but here is some information.
1953 (and, presumably earlier) the Suburban seat frames and garnish moldings were Wicker Brown. The upholstery was all brown. There might have been a deluxe option with maroon seat frames and covers but I do not have any documents for 1953.
1954 (and, presumably, 1955-1st series) the Suburban seat frames and garnish moldings were Maroon. The upholstery was maroon sides and gray top surfaces. There was no deluxe seat option.
Tim
