Many P. Hall had written in the Secret Teachings of All Ages – “Consciousness, intelligence, and force are fittingly symbolized by the colors blue, yellow, and red. The therapeutic effects of the colors, moreover, are in harmony with this concept, for blue is a fine, soothing, electrical color; yellow, a vitalizing and refining color; and red, an agitating and heat-giving color. It has also been demonstrated that minerals and plants affect the human constitution according to their colors.
Thus a yellow flower generally yields a medicine that affects the constitution in a manner similar to yellow light or the musical tone mi. An orange flower will influence in a manner similar to orange light and, being one of the so-called secondary colors, corresponds either to the tone re or to the chord of do and mi.
The ancients conceived the spirit of man to correspond with the color blue, the mind with yellow, and the body with red. Heaven is therefore blue, earth yellow, and hell–or the underworld–red. The fiery condition of the inferno merely symbolizes the nature of the sphere or plane of force of which it is composed.
In the Greek Mysteries the irrational sphere was always considered as red, for it represented that condition in which the consciousness is enslaved by the lusts and passions of the lower nature. In India certain of the gods–usually attributes of Vishnu–are depicted with blue skin to signify their divine and supermundane constitution. According to esoteric philosophy, blue is the true and sacred color of the sun. The apparent orange-yellow shade of this orb is the result of its rays being immersed in the substances of the illusionary world.
In the original symbolism of the Christian Church, colors were of first importance and their use was regulated according to carefully prepared rules. Since the Middle Ages, however, the carelessness with which colors have been employed has resulted in the loss of their deeper emblematic meanings.
In its primary aspect, white or silver signified life, purity, innocence, joy, and light; red, the suffering and death of Christ and His saints, and also divine love, blood, and warfare or suffering; blue, the heavenly sphere and the states of godliness and contemplation; yellow or gold, glory, fruitfulness, and goodness; green, fecundity, youthfulness, and prosperity; violet, humility, deep affection, and sorrow; black, death, destruction, and humiliation. In early church art the colors of robes and ornaments also revealed whether a saint had been martyred, as well as the character of the work that he had done to deserve canonization.
In addition to the colors of the spectrum there are a vast number of vibratory color waves, some too low and others too high to be registered by the human optical apparatus. It is appalling to contemplate man’s colossal ignorance concerning these vistas of abstract space. As in the past man explored unknown continents, so in the future, armed with curious implements fashioned for the purpose, he will explore these little known fastnesses of light, color, sound, and consciousness.”