One of the beloved topics of metaphysical philosophy, that of the human Aura, is presented and analyzed in this book with simple words. At the same time, the colors that appear in it are decoded and reveal the character of the person, as well as their current emotional and mental state. It is a wonderful and rare book of mystical metaphysics in the global literature, first published in 1912, by the gifted and prolific Swami Pachadasi (also known as William Walker Atkinson), who was one of the most enthusiastic explorers of the New Age in the Western world, primarily in America. In this small book, the keys that open the marvelous astral worlds are given, and it is up to each of us whether we will use them to get to know the wonderful chromatic kaleidoscope of auras and whether, by using them, we will cultivate the dormant powers within us that will help us improve both our own lives and the lives of our fellow human beings.