The gross elements are earth, water, air and fire, with the fifth being space. Each particle of the body is made up of these five elements, which are manifested in different colors. In their true quality, space is blue light, water is white, earth is yellow, fire is red, and air is green.
Tulku Thondup (2001). “Boundless Healing: Medittion Exercises to Enlighten the Mind and Heal the Body”, p.73, Shambhala Publications
