Yeah, I got one. My guess is that there aren't more out there because M-sport isn't available in it. It was the closest I could get to Titanium Silver.
I think there is a poll thread regarding who has what color for the X1. I think I vaguely remember someone mentioned something about the most popular color by number of units sold.
FWIW, I remember reading in Roundel (I think) that white has now overtaken silver as the most popular color across the fleet, and that was attributed to the popularity of white because of Apple.
Yet, at the BMW plant last week for a tour, they mentioned that the most popular color that they produce there (X3s, X5s, X6s) is black.