Cave paintings dating back to pre-historic times are found in various regions of the world. Colors used were derived from hematite iron (III) oxide ochres, manganese oxide browns, bauxite, a red aluminum oxide.    Since that time, humans have continuously dedicated effort to developing a wide range of colors as their artistic talent developed. Ancient Egyptian art shows both men and women adorned with eye makeup that may have been used for medicinal purposes, to keep parasites away from ...