National colours of Canada red "in recognition of Canada's official colours". The proclamation accepts both colours for the maple leaves, stating ""three maple leaves conjoined on one stem proper"", in which "proper" refers to the natural colour of the leaves, which is green in spring and summer, and red in autumn. It was not until 1961, with the creation of The Queen's Personal Canadian Flag, that red and white became entrenched as the national colours. For the Federal Identity Program operated by the Treasury Board Secretariat of the Government of Canada, official and signage colours are specified in technical specification T-145. The red colour
Flag of Sudan Flag of Sudan The current flag of Sudan () was adopted on 20 May 1970 and consists of a horizontal red-white-black tricolour with a green triangle at the hoist. The flag is based on the Arab Liberation Flag shared by Egypt, Iraq, Syria and Yemen that uses a subset of the Pan-Arab colours in which green is less significant. Prior to the 1969 military coup of Gaafar Nimeiry, a blue-yellow-green tricolour design was used. According to "World Flags 101": In 1881, at the beginning of the Mahdist War, the Mahdi Muhammad Ahmad appointed Abdallahi ibn Muhammad as one of his