Yellow colour of leaves is due to the presence of

Xanthophylls are the typical yellow pigments of leaves. A green leaf is green because of the presence of a pigment known as chlorophyll, which is inside an organelle called a chloroplast. Anthocyanins are water-soluble vacuolar pigments that may appear red, purple, or blue depending on the pH. Melanin is a class of compounds that serves as a pigment with different structures responsible for dark, tan, yellowish/reddish pigments in marine animals.