Confidence votes 18. For the white through orange, it takes 4 or 5 wins. For the green through black, it takes about ten wins. I have heard in the end when you earn your black belt, the total wins is 88.
Sulfur occurs naturally as the element, often in volcanic areas. This has traditionally been a major source for human use. It is also widely found in many minerals including iron pyrites, galena, gypsum and Epsom salts.
Sulfur is a plentiful element found in nature. Though less commonly known than nitrogen or iron, sulfur is a vital mineral necessary for balanced soil, plant growth and reproduction. Sold as a fertilizer, an herbicide and an insecticide, sulfur affects soil pH and, therefore, must be used with care.