Black is Beautiful?

Black Friday uses a positive connotation of the color black -- this is the day when retailers go from "being in the red" to turning a profit -- but Black Monday and Black Tuesday refer to infamous market crashes and use black to refer to the darkness accompanying the event . . . and then, of course, you can be back in black, the man in black, or none more black  . . . it's a very versatile color, or lack thereof.