Hard to find accurate code info, but what I've found:
L92u: Arctic Silver
X1: Metallic
X70: Steel Door Sills
274: Vanity Mirrors
421: Cassette Shelf (this sure dates it, LOL)
551: Wind Stop (no longer with the car)
586: Driver's Lumbar Support
659: Computer (ah, the info center that gives outside temp, avg mpg, etc)
198: 1.7kw Starter
249: Tiptronic S
437: Comfort Seat L
438: Comfort Seat R
Codes 432, 502, 537, 584, 981, and 983 are a mystery to me.
Anyone that can fill me in, it would be greatly appreciated.