This doesn't really apply to the San Francisco 49ers since they don't have any alternate helmets, but maybe now is the time for them to change that. Variety is always nice and the 49ers have ...

Dynamic displays featuring a 49ers’ helmet, as well as that of the Kansas City Chiefs’ illuminated the Vegas skyline as they were splashed onto the Sphere’s fully programmable LED exterior ...

Since the late 1990s, Stone — who has been a 49ers season-ticket holder since the magical 1981 season — has been getting Niners enshrined in the NFL Hall of Fame to sign the helmet.