melatonin, dark skinned persons tend to have more..and its coloring...
The brown pigment that determines skin color is called melanin. Melanin is produced by specialized cells called melanocytes in the skin in response to sun exposure. The amount and type of melanin produced by melanocytes contribute to the variations in skin color among individuals.
Foods with orange colouring contain carotene, whilst those with yellow get their colouring from the pigment xanthophyll.
Melanin is the pigment found in the eyes that gives them their color. It is produced by cells called melanocytes and the amount of melanin present determines eye color, such as brown, blue, green, or hazel.
The pigment which determines skin color is melanin.
E132 = Indigotine - synthetic blue colouring E122 = Azoribine - synthetic red colouring E171 = Titanium dioxide - white mineral based colour E172 = Iron oxides and hydroxides - orange, red, brown, blank pigment.
ceramic pigment
the natural colouring matter of animal or plant tissue. It can be found on various animals and plant the pigment of a plant is actually what make it green is chlorophyll which is present in the pigments of plant.
Because of the colored pigment that is added to it.
One is sepia.
Umber
One common yellow-brown pigment is Ochre. It is a natural earth pigment containing hydrated iron oxide. It has been used in art and decoration for thousands of years.
Sepia