Thanks for the replies. Just to let you know... Apparently the more I thought about it the blacker the spot seemed to be (in my mind). Fortunately I managed to make it worse than it really was.
Went back to look again and the spot is a light (very) grey water stain. Did try the bleach and water suggestion and viola it cleaned right up and everything looked great.
Just thought I'd let folks know I appreciate the help and it was successful.
The only problem is that on the way back home we stopped at a dealer (just to look) and the Supreme Commander found a new one that she is crazy about. Good thing we were just looking....yeah right.
Soooo, the saga continues.