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
Shades of pink Shades of pink This article is about notable tints and shades of the color pink. These various colors are shown below. At right is displayed the web color pink. At right is displayed the web color light pink. The name of the web color is written as "lightpink" (no space) in HTML for computer display. Although this color is called "light pink", as can be ascertained by inspecting its hex code, it is actually a slightly deeper, not a lighter, tint of pink than the color pink itself. A more accurate name for it in terms of traditional color nomenclature