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It changes it color because of special cells called "chromatophores". These chromatophores contain sacks of color pigments.
Substance used for coloring.
pigments
It is the presence of the pigment melanin that is responsible for yellow coloring in butterflies (Lepidopteraorder).Specifically, the activation of melanin results in brown or yellow coloring in butterflies. Other colors are due to the predominant presence of other pigments. For example, anthocyanin is responsible for blue, purple or red. As is the case with plants, chlorophyll is responsible for green-colored butterflies.
One is chloroplast... the rest I forgot.
They are called chlorophylls. They are the photosynthetic pigments
Color is considered an INTRINSIC property.
Chromatophores are, as you probably know, the different cells that cause color change in certain animals. Mostly fish, reptiles, and amphibians. They work by moving vesicles that contain pigments into different forms; contracting them and expanding them. They are sometimes in layers meaning that when one layer is contracted, another becomes visible. They can also form arrays where some light bounces off a chromatophore and some passes through, this bounces off another chromatophore and passes throught the first creating a new color. Chromatophores can be controlled either hormonally or phisiologically (muscles, nerve cells).
are you talking about Chromatophores? pigment-containing and light-reflecting cells found in amphibians, fish, reptiles, crustaceans, and cephalopods. Colours can be from true pigments, such as carotenoids and pteridines or melanin, that appears black or dark brown.
Strawberries are a fruit and contain naturally occurring colored pigments
Chameleons change their color through specialized cells called chromatophores. Within these cells, pigments move around in layers to result in a variety of colors.
food coloring, water color paints, clothing dyes