 Flowers, fruits, and leaves get their pigments from anthocyanins and copigments (such as tannins and flavonols).The combinations provide the exact colors of various plants at different stages of development.The Robinsons found that, at different ratios of anthocyanins to copigments, the copigments had different effects and they postulated that this was due to the copigments breaking up the anthocyanin complexes, which they observed when they were in solution together.