What Is The Significance Behind The Choice Of Colours For The Olympic Rings?

Each of the five Olympic rings has a distinct colour. The rings are red, yellow, blue, black and green in colour, representing each of the five participating continents—Asia, Africa, the Americas (North and South America are treated as one continent), Europe and Australia—and are placed on the white background of the flag of the modern Olympic movement, which was founded by the Frenchman Baron Pierre de Coubertin (1863 to 1937).
De Coubertin was an educator and served as the president of the International Olympic Committee from 1896 (when the first edition of the modern Games was held in Athens, Greece) to 1925. De Coubertin designed the Olympic flag in 1912 after the Olympic games in Stockholm, the capital of Sweden, but the rings made their first appearance eight years later, at the 1920 Olympic games in Antwerp, Belgium. Incidentally, the 1912 edition of the event was the last Olympics to take place before World War I (1914-1918), and the 1920 edition was the first edition of the games to take place after World War I. The rings were originally supposed to make their debut in 1916, but the Olympics were cancelled because of the war.