Hmmm, if it was a silver car it could have been "Meridian Silver." That's a "warm" shade of silver which has a touch of rose tint in certain lighting. Quite nice.
Here is a very unusual picture supposedly of zanzibar. If you take a look at the other pictures on this site they are interesting for comparison.
http://www.whiteson.org/boxster/gallery/pics/43448130.shtml