The color of a persons skin is determined by the amount of melanin pigments in their skin. Melanin is produced by cells called melanocytes, which are located in the bottom layer of the skins epidermis. All people have melanin, except in the rare case of being born albino, which can occur in any race. However, the amount and type of melanin produced can vary between individuals and races, resulting in different skin colors.
It is important to note that the concept of race is a social construct and not a biological one. The idea that certain physical characteristics, such as skin color, define distinct races of people has been debunked by scientific research. Therefore, it is not accurate to say that melanin makes "black people" black, as race is not a biological category.
It is also worth mentioning that there is a pseudoscientific theory called "melanin theory" that claims black people have superior mental, physical, and paranormal abilities because they have higher levels of melanin. However, this theory has been widely discredited and is not supported by scientific evidence.