How did Allianz Arena change its exterior colors for different teams?

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Michigan Stadium, Ann Arbor — Stadium Aerial view of Michigan Stadium, home to the gridiron football team of the University of Michigan, Ann Arbor.

The Allianz Arena achieves its color-changing exterior through the use of ethylene tetrafluoroethylene (ETFE) cushions that form the stadium's facade.1

Designed by the architecture firm Herzog & de Meuron, the stadium was originally built to host two teams with different colors: Bayern Munich (red) and TSV 1860 (blue). The ETFE panels were designed to be illuminated, allowing the structure to glow in the respective colors of the home team for each match, or in white when the German national team played.1

In 2014, the stadium upgraded to an LED lighting system capable of producing up to 16 million colors. Following the departure of TSV 1860 in 2017, the lighting schedule was adjusted to reflect Bayern Munich’s colors, though the system remains capable of displaying various combinations for special events.1