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Skin only comes in one color: beige/brown. It is only a question of how light or dark, along with some minor variants such as blush or sallow. Albinos are an exception because they have no coloration.
Although genetics play a role, skin tone is largely an adaptive mechanism to cope with environment. Melanin is the primary determinant of skin tone and deepens in reaction to sunlight to counteract the effects of ultraviolet rays. Hence, people from equatorial regions are generally darker, while those living near the poles are lighter.2