Light micrographs of plastids in RF and BF. (A) Green RF (S1) cell with chloroplasts. (B) Ripe RF (S4) cell with orange globular chromoplasts. (C) Green BF (S1) cell with chloroplasts. (D) Ripe BF (S4) cell without colour chromoplasts. Fruits are not stained to show the natural colour of plastids.