The color of the leaves is related to the pigment in the leaves. Not only chlorophyll (chlorophyll a and chlorophyll b), but also lutein, carotene, anthocyanin and so on. The content of various pigments in leaves will be influenced by environmental factors such as temperature, humidity and light. So leaves have different colors in different seasons and growth stages.

There is also the pigment of vacuoles in mesophyll cells, and the color of leaves of non-green plants is determined by the pigment in vacuoles, such as flaming maple leaves.