The Olympic flag was created by Pierre de Coubertin in 1914. The Olympic flag has a white background, with five interlaced rings in the centre: blue, yellow, black, green and red.
Athletes normally compete under the flag of the country they're from, but complications can lead to an athlete competing independently under the Olympic flag.
If independents have won medals, why did they compete independently
The first Olympic flag, presented to the IOC at the 1920 Olympics by the city of Antwerp, Belgium, was lost until 1977. Where had it been?