Well, I just called the local BMW dealer and attempted to purchase a pint of paint. They informed me that they don't offer it... only in the small touch up bottles. They gave me the name and phone number of a local body repair place, which I thought was kinda odd. I call this place (Harvey's Collision Center).
I called Harvey's and after being transfered around, I finally talked to a guy that informed me that they can not sell this to the general public but he then told me to contact his paint supplier.
I haven't call this place yet but I'm a little surprised that buying a pint of car paint is this complicated.
Has not one else been successful in doing this?