To be perfectly honest,
 I really didn't really care what colour our van was, as long as it wasn't  black, as going by our previous vehicles, a utter utter nightmare to keep clean, and it shows every swirl mark, when the sun comes out, as bev my partner found to her cost! and was extremely frustrating,
So for us, it needed to be a colour, that was popular, and also when it came time to resell, I wouldn't want to be lumbered with a colour nobody necessarily liked, and would be harder to sell, and most probably lost more on depreciation, so it was a toss up between silver and natural grey,
boring I know, Iv'e seen the natural grey on other vans, not necessarily Californians, and thought they looked very smart, and it seems to be quite a prevalent colour, Â white being obviously the most prevalent, for commercials,
On the other hand I haven't personally seen any colours  I haven't liked, but obviously I haven't seen all the colours in the flesh as it were.
Anyway there it is for what it's worth.