When I ordered my Z4 with M sport package, I asked for it to have a manual tranny and Crimson Red paint. They agreed to the MT but not the color, which is available on non-M Sport Z4's. So I htink they are particular with this kind of customizing. But you can always go BMW Individual and get things just the way you want. $$$
2012 Z4 35i, ED 2/24/2012, Melbourne Red Metallic, Black Leather, Carbon Trim, 6MT, ///M Sport, CW, PP, PS, NAV, CA, LED Angel Eyes, red calipers, pedal covers, stubby antenna, Luxon strut bar, CF engine cover, LCI side markers, Extra Enjoyment Package.