When my son was little, we organized his clothes by color. This made it easy for him to find what he was looking for. Matching was never a problem, but now neither was choosing. I organize my clothes by type. Dress clothes, casual clothes, short sleeve shirts, long sleeve shirts. As many of my shirts hanging in the closet are plaid, and therefore, multi-color, this has never occurred to me. Looking at my t-shirts, which are in open shelves, I thought I might want to organize them by color. I often pick a t-shirt based on color, so going to the grey shelf or the blue shelf would make this morning choice a little easier. Most of these t-shirts are conference swag promoting a long-forgotten tech company, so it really is about the color, not the message.