The immature fruit has green skin that gradually turns yellow, orange, purple, red, or combinations of these colors as the fruit matures. Mature fruit has a characteristic fragrance and a smooth, thin, tough skin. The flesh of ripe mango is pale yellow to orange. The flesh is juicy, sweet, and sometimes fibrous. The fruit varies greatly in size and character. Its form is oval, round, heart-shaped, kidney-shaped, or long and slender.