Touch-up paint:
Automative Touchup:
https://www.automotivetouchup.com/ch...model=1-Series (VO is listed)
Dr. Colorchip:
http://www.drcolorchip.com/ (although don't see VO in their BMW list)
Color codes:
300 = Alpine White III
475 = Black Sapphire Metallic
B44 = Valencia Orange Metallic
Some experiences:
http://www.1addicts.com/forums/showthread.php?t=613032
http://www.1addicts.com/forums/showthread.php?t=589263