Chromoplasts are yellow or reddish in colour because of the presence of carotenoid pigments. They do not contain stored food material. Chromoplast are formed either from leucoplast or chloroplast. Related Theory Chromoplasts are the plastids which are yellow or reddish in colour because of the presence of fat-soluble carotenoid pigments. Chlorophylls are absent in these plastids. Depending upon the dominant pigments present in plastids, chromoplasts are further classified into rhodoplasts that are rich in red pigment; phaeoplasts and xanthoplasts that contain yellow pigments. Chromoplasts are formed either from leucoplasts or chloroplasts. Change of colour from green to reddish during the ripening of many fruits, for example, Tomato and Chilli, is due to transformation of chloroplasts to chromoplasts. The chromoplasts also provide colour to many fruits and flowers.