The color selection of the uniforms of the teams participating in the World Cup is to draw lots to determine the identity of the home team and the visiting team before the game. The home team chooses the color of the uniform, and the visiting team gets the right to serve first.
When the home team chooses a dark or light jersey, the visiting team can only wear the corresponding light or dark jersey. For example, Argentina chooses light blue and white jerseys, and Saudi Arabia chooses dark green balls.