Like their physical plane counterparts, all the astral colors are formed from three Primary Colors, namely (1) Red; (2) Blue; and (3) Yellow. From these three primary colors, all other colors are formed. Following the Primary Colors, we find what are known as the Secondary Colors, namely: (1) Green, derived from a combination of Yellow and Blue; (2) Orange, formed from a combination of Yellow and Red; and (3) Purple, formed from a combination of Red and Blue. Further combinations produce the other colors, as for instance, Green and Purple form Olive; Orange and Purple form Russet; Green and Orange form Citrine. Black is called an absence of color, while White is really a harmonious blending of all colors, strange as this may appear to one who has not studied the subject. The blending of the Primary Colors in varied proportions produce what is known as the "hues" of color. Adding white to the hues, we obtain "tints;" while mixing Black produces "shades." Strictly speaking Black and White are known as "neutral" colors. Now for the meaning of the astral colors--that is, the explanation of the mental or emotional state represented by each. I ask that the student familiarize himself with the meaning of the Primary Colors and their combinations. A clear understanding of the key of the astral colors is often an aid in the development of astral sight. KEY TO THE ASTRAL COLORS. RED. Red represents the physical phase of mentality. That is to say, it stands for that part of the mental activities which are concerned with physical life. It is manifested by the vitality of the body, and in other hues, tints and shades, is manifested by passions, anger, physical cravings, etc. I shall describe the various forms of Red manifestation, a little later on. BLUE. Blue represents the religious, or spiritual, phase of mentality. That is to say, it stands for that part of the mental activities which are concerned with high ideals, altruism, devotion, reverence, veneration, etc. It is manifested, in its various hues, tints, and shades, by all forms of religious feeling and emotion, high and low, as we shall see as we proceed. YELLOW. Yellow represents the intellectual phase of mentality. That is to say, it stands for that part of the mental activities which are concerned with reasoning, analysis, judgment, logical processes, induction, deduction, synthesis, etc. In its various hues, tints and shades, it is manifested by the various forms of intellectual activity, high and low, as we shall see as we proceed. WHITE. White stands for what occultists know as Pure Spirit, which is a very different thing from the religious emotion of "spirituality," and which really is the essence of the ALL that really is. Pure Spirit is the positive pole of Being. We shall see the part played by it in the astral colors, as we proceed.