This is a problem that the organizers of the World Cup will never face. The fact is that the World and European Championships are held in the summer, and white balls are an excellent choice. But many Champions League matches are held in the winter. Of course, for such conditions, bright and contrasting balls are needed.
Adidas engineers and designers have proposed a solution to the problem. They created a copy of Adidas Final 6 in bright orange. It is very convenient for a snowy field. However, many football freestylers noted severe pain in their eyes and dizziness after training with this ball.