Some Pagans assign colors to the compass Directions. Most commonly, North/Earth is green, East/Air is Yellow, South/Fire is red, and West/Water is blue, though there are variations, depending on practice, Tradition, and culture. Some also include Spirit/Akasha/Æther/Center/Unification, and assign it purple.
My High Priestess and I spoke about this in relation to Sorgae, when a mutual friend wanted to cross-stitch a compass with appropriate colors. These are the associations we came up with.
Northeast- Smoke, the Infinite, Potential, Journeying, Astral, Crossing Boundaries of Spacetime= Grey
East- Air, Knowledge, Beginnings, Fae Teachings, Elder Children of the Gods= White
Southeast- Spark, Decision, Divine Wisdom, the True Quest, Firestealer= Pale Yellow
South- Fire, Will, Action, Dynamism, Witches, Doing= Red
Southwest- Steam, Blood, Sacrifice, Desire, Ecstasy, Indulgence, Frenzy, Lust = Dark Red-Purple
West- Water, Otherworlds, Emotion, Inspiration, Death, Hounds = Dark Blue-Grey
Northwest- Clay, Magick, Formation, Realization, Manifestation, Inherent Lifeforce= Silver
North- Earth, Silence, Communion, Gateway Between Past and Future= Black
