Human hair color account for all possible shades of brown, blond, or red (for example, platinum blond versus dark blond/light brown), nor does it explain why hair color sometimes darkens as a person ages. Several gene pairs control the light versus dark hair color in a cumulative effect. A person's genotype for a multifactorial trait can interact with the environment to produce varying phenotypes (see quantitative trait locus). Natural hair color can be brown, blond, black, red, or white; all natural hair colors including grey, white and lightest blond, are shades of brown. The Fischer–Saller scale, named after Eugen Fischer and , is
Sport-Saller Sport-Saller Sport-Saller is a German sportswear company which focuses on football team sports products, and is based in Weikersheim, Baden-Württemberg. Sport-Saller was created in 1972 in Tauberrettersheim, Germany. It was created by Richard Saller, who at the time was a football coach. Saller originally started as a footballing business, but soon turned its attention to creating sporting goods company that develops, produces, and sells their own sportswear. Saller first opened a sportswear store with the idea of being able to equip local sports teams with the equipment they needed. In 1990 Sport-Saller moved to Weikersheim where the company had built