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
National colours National colours National colours are frequently part of a country's set of national symbols. Many states and nations have formally adopted a set of colours as their official "national colours" while others have "de facto" national colours that have become well-known through popular use. National colours often appear on a variety of different media, from the nation's flag to the colours used in sports. Some noted supranational organisations like the United Nations and the European Union have their own “national colours” as part of the organisation’s branding and marketing. They are usually from the organisation’s flag. Although supranational organisations doesn’t