Prius colors by city?

Ok, this is one of those off-the-wall sounding topics, but over the last 3 months we seem to have made a disturbing discovery. It all started during the long wait for my Prius (Package 8, magnetic grey). In my area (Westchester county, NY) my wife and I became more aware of other prrius's on the road. Very surprisingly, over 75% were silver. The remaining balance were blue, one or two red, and a few that strange green. Initially we chalked it off to people liking silver better and figured Toyota made a lot more silver cars.

However, I took a trip to Boston and in that area my unscientific survey revealed about 75% blue Prius. (hum the Twilight Zone theme here). A few weeks later, we drove to Washington DC where abut 75% were red!

Since the cars are on allocation, and in many cases dealers get what they are given, could there be somone at the port saying, "send the silver ones to New York, the red ones to DC, and the blue to New England"?

I know this seems unbelievable, but that's the pattern we observed. We have only seen one other magnetic grey Prius other than ours (and it was in Connecticut). I got my car because the regional office found the one I wanted and gave it to my dealer to help him out (they accidently sold the allocated car I was promised to someone else).

Normally, I would attribute color preference to area taste...it is possible, I suppose for people to be regionally divided in car color preference, though I haven't observed it in other brands and Toyota models. Sometimes a dealer can do this. I bought a Mitsubishi Eclipse a few years ago from a dealer who stocked 7over 50% red cars -- I love bright red so it worked well for me-- and it could be assumed that what I obeserved could be attributed to dealer preference. However, the two Toyota dealers in my area do not show this preference if you look at their inventory of other models.

Has anyone else noticed this?

Bob