Biological pigment as the melanins. The third type is the xanthophores which contains yellow pigments in the forms of carotenoids. The various colors are made by the combination of the different layers of the chromatophores. These cells are usually located beneath the skin or scale the animals. There are two categories of colors generated by the cell – biochrome and schematochromes. Biochromes are colors chemically formed microscopic, natural pigments. Their chemical composition is created to take in some color of light and reflect the rest. In contrast, schematochromes (structural colors) are colors created by light reflections from a colorless surface and refractions
Snow skin mooncake like traditional cakes. Unlike traditional mooncakes which are served at room temperature, snow skin mooncakes are typically eaten cold. The crust of snow skin mooncake is made of glutinous rice, which is frozen. Snow skin mooncakes are typically white and are served cold, which is why they are named "snow skin". However, mooncakes may have other colors because of added flavors in their crusts. For example, if chocolate is added, the color of the crust might be brown. Traditional mooncakes are usually filled with salted duck egg yolks and lotus seed paste or red bean paste, while snow skin mooncakes