Blue replaced brown on Padres uniforms in 1991
Brown Uniforms Create Identity Padres
Padres Unveil New Uniforms With Brown-and-Gold Color Scheme - Sports Illustrated
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
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Goodbye to the blue: Ending of Padres' era
San Diego Padres - Wikipedia
San Diego Padres guide for new fans - The San Diego Union-Tribune
The Padres change uniforms, again, so let's look at their visual history
Blue replaced brown on Padres uniforms in 1991, by FriarWire
Goodbye to the blue: Ending of Padres' era
Brown Uniforms Create Identity Padres
Padres unveil new brown-and-gold uniforms, return to roots for 2020 season