I have a black 3 series and that is a PITA to keep clean and shows every mark but the Z is Monaco blue and much more forgiving. I think Monaco blue sits somewhere between Montego and Midnight blue but not sure. With a contrasting interior, I have the Champagne, it's really quite nice. I also saw a BMW here in Monaco or Midnight blue with what I think was called 'English Saddle' or some such but it was saddle brown. It actually looked very nice but is the only one I have seen.