After reading a bit more.. the color code is "122". The reason for my curiousity is because at first I thought it was "smoke silver"... but the close up showed its not. So I had no clue. Doing a search on "122" shows that mostly w124's had it.

http://www.geocities.com/MotorCity/Speedway/5350/mbcodes.htm

This site shows that only w124 has the 122 option? Can this be right?... I guess not as I own a w126. Anyone else with this color.. or seen another in the same color?