For comparisons sake here is white, which from these sots, looks the best M Sport colour IMO - but I would never choose white for UK - maybe if I lived in sunnier climes..
X3 SE here for comparison also, even though this IMO is the best M Sport colour - I'm not sure if SE still doesn't look better.
X3 xdrive30d SE
X3 xdrive30d M Sport
X3 xdrive30d SE
X3 xdrive30d M Sport
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BMW xdrive30d M Sport Space Grey, Black Nevada, Aluminium Trim, 19" 369M alloys, Prof. Media package, Visibility package, Access package, VDC, Sun Protection Glass, Front Seat Heating, Split-folding rear seats, Sun Blinds, Lumbar support, Extended Storage, Business Stereo, DAB, Tel. USB audio interface, 6NR, 614 Internet.