" Four are the tributaries of the great river. Four are the harvests from floodseason to dust. Four are the great treasures: timbalin, myrrh, lapis, and jungissa. Four bands of color mark the face of the Dreaming Moon. Red for blood. White for seed. Yellow for ichor. Black for bile. "

― N.K. Jemisin , The Killing Moon (Dreamblood, #1)