The Olympic rings are made up of the colours Blue, yellow, black, green, and red. These rings stand for the union of different countries meeting and competing at the olympics. Baron Pierre De Coubertin designed this symbol.
As the olympic flag enters the stadium, it’s almost the start of the games. Elevating up the flagpole it soars until the olympics are ended. It is only in the closing ceremony it comes down. This is what signals the end of the games.