I agree that blue looks awful with black trim... Without the trim - totally different story. So it is a great color ONLY if you are willing to paint black trim same blue color.
Otherwise I go for PG, and I am not biased
Hers : 2013 335xi Imperial Blue/Black with lots of stuff...
His : 2013 X5 35d Deep Sea Blue/Black with all packages
Previous : 2010 335xi Monaco Blue/Black with just about every option...
Previous : 2008 X5 4.8i Space Gray/Black with just about every option...