All by itself is not so meaningful but add black and it might make you think about the color of a sea. Where are they located? What about the White sea? No, not that one. The one the Turks call the white sea, the Mediterranean. For the Turks it has always been the white sea. Now we have the colors of three significant seas to line up with three significant horses. Watch for more pieces that fit. Blessed is the one who looks.