I don't know if they build the 4 on the same line they build the 3 on, but if so it seems that it would be feasible to make the 4 available in Mineral White and the 3 available in Midnight Blue. The F30/31 colors seem to be very limited unless you like white, grey or black. The blues are either very light or very dark, the gold isn't a subtle one like that available on the 5 series, the red is kind of a crayon red, and the brown/bronze colors aren't my cup of tea. It seems that nowadays at least 90% of the 3 series out there are white, silver, grey or black. It's time to bring some good colors back.