She combined an individual's sun sign and ruling planets with numerology and color theory to create 366 'birthday colors,' each of which helps give deeper meaning to our internal conditions and behaviors. We're talking about colorstrology, a system developed by intuitive, astrologer, and numerologist Michele Bernhardt. Well, the study of colors can also be used to provide insight into who you are and why. Many people love exploring astrology and birth charts, for instance. There are so many interesting ways you can seek out a better understanding of your personality, motivators, and driving forces.