There's such a small number of X1s in the US at this point, even smaller actually on the road. Let's give the X1 a few months, even a year, and then see what the color preferences are. I bet they follow what one sees for most BMWs now. At least for me, I see a lot of black, white, silver/grey. In fact, that's what I see for all cars, not just BMWs. I think the Mineral Grey X1 is very handsome and I ordered it initially, but I changed to Midnight Blue just because I've never owned a blue car and because blue overall is one of those colors a little easier to pick out quickly in a parking lot.
In the end, it's what's under that paint we are all going to enjoy the most...