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
The Colours Match in 2002 to mark the Golden Jubilee of the first Colours Match in December 1962. It was first presented to the winners of the 51st Colours Match, U.C.D., in November 2002. The cup is in the form of a claret jug. Trinity College are the current holders beating University College by 11 pts to 10 pts on 5 April 2018 at College Park, Trinity College Dublin. 'Colours Matches are also played between Trinity and UCD in Women's rugby union and other sports, such as Association Football, Gaelic Football, Hurling, Swimming, Boxing, Water polo, Field Hockey, Golf, Sailing, Tennis and Fencing.