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, Victoria the Metropolis of the Mallee. Robert Riby owned and operated the first newspaper in Rainbow. He married Mary Anne Palethorp. Rainbow was part of the Dimboola Shire until 25 January 1995, when the shire was then united with the Lowan Shire. The town was the subject of an episode of the ABC television program, "Enough Rope", with Andrew Denton, on 31 July 2006. Rainbow was well known for its wheat growing. The silos still stand sentinel over the township and are visible for many kilometres before reaching the township. Many of the towns original settlers were of German descent and