So it was stated in a Lore interview awhile back that the "Light" and "Darkness" that's been cropping up in the plot direction has nothing to do Astral and Umbral polarities. But then that leads me to wonder one thing: does the Light and the Dark have polarities like the elemental wheel? Is there Astral Light, Umbral Light, Astral Darkness, and Umbral Darkness? If not.....why?