The silver is much darker than the ES Sedan or P5 Silver. Its basically the paint equivalent of the 2003.5 wheel finish, with all I can describe as a "fuller" look.
The Vancouver Port is the location for all West Coast Mazda's, so if there is only 5 Blue ones sitting there, I have a suspicion they are for public sale pieces. They are also set apart from the others, and have been for some time. From what I understood, we won't get that color for public sale in Canada, just like they didn't give us black in 2003 those bastards!
As for seeing as many MSP's as Civics, with the nubmer and price, I doubt it. The approx 50 or so MSP are for all of Western Canada, I'm sure there are more available, but it is very limited. The two dealers I've seen with the 2003.5's can't test drive, and none of the staff even got a ride in the one sample they have on the showroom floor. I can't imagine that helps selling these cars? Not letting people testdrive them that is. No off the street sales, only people that know they want that car before they even go in there.