Rainbow flag Alliance (ICA) designed an international co-op symbol and a flag for the first "Co-operators' Day," which was held in July 1923. After some experiments with different designs, a famous French cooperator, Professor Charles Gide, suggested using the seven colours of the rainbow for the flag. He pointed out that the rainbow symbolized unity in diversity and the power of light, enlightenment and progress. The first co-op rainbow flag was completed in 1924 and was adopted as an official symbol of the international cooperative movement in 1925. In 2001, the ICA's official flag was changed from a rainbow flag to a
Rainbow rose Rainbow rose The rainbow rose is a rose that has had its petals artificially coloured. The method exploits the rose's natural processes by which water is drawn up the stem. By splitting the stem and dipping each part in different coloured water, the colours are drawn into the petals resulting in a multicolored rose. With these changes to the rose, it causes them to not live as long as an uncoloured rose. The Rose colors are artificial Besides roses, other cut flowers like the chrysanthemum, carnation, hydrangea, and some species of orchids can also be colored using the same method.