Good luck...as you can see in the screen shots below from the 6 series brochure...black isn't just black...BMW uses undertones (base coat paint) layered with top/final coat paints that have different hues & colored metallic flakes that can create significant visual differences based on ambient lighting. They all may look "black" in the dark, but on a sunny day or even overcast/cloudy day...all of these colors will look differently.