when did the 49ers wear black jerseys

Alternate Uniforms vs. Minnesota Vikings
alternate uniforms for season opener 2020 Super Bowl: 49ers won't wear all Super Bowl 2020: Will NFL Allow 49ers Uniforms in Super Bowl vs. Chiefs The San Francisco 49ers New Alternate The San Francisco 49ers will be wearing 49ers could have new alternate uniforms wear black uniforms for 'Color Rush The San Francisco 49ers And Arizona wearing a black jersey in practice Color Rush' Game

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