But for some reason Blue have done very well.
The college-educated classes, who trend blue, have low rates of divorce and single parenthood.
To foil counterfeiters, hues of pink, purple, yellow and blue have been taking over.
The truth is that no two editions of "Kind of Blue" have sounded exactly the same.
Kennedy and Blue have sought advice from the Seattle marketing company Heckler Associates, best known for inventing the name Starbucks.
Their trademark colors of red, white and blue have been traded in for the stark, old-school black and white.
And yet Blue have had five of them, meaning that they've had more Best Ofs than studio albums.
Lee Ryan has filed for bankruptcy, meaning that the entirety of the pop boyband Blue have gone financially bust.
Acclaimed Broadway revues of vintage African-American music like "Sophisticated Ladies," "Ain't Misbehavin' " and "Black and Blue" have had many virtues.
In any number of recent trials involving people suspected of injuring or killing police officers, men and women in blue have filled the gallery in significant numbers.
