Blue replaced brown on Padres uniforms in 1991, by FriarWire
Padres uniforms: San Diego returns to brown jerseys in 2020 - Sports Illustrated
Best and Worst Uniform Sets for Padres
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
Padres getting new blue and yellow uniforms, brown will be official alternate - Gaslamp Ball
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
The Padres change uniforms, again, so let's look at their visual history
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
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
The Only Consistency to Padres' Uniforms Is Inconsistency
Goodbye to the blue: Ending of Padres' era
The Padres' Journey From Unique to Undistinguished (and Back Again?)
Ranking MLB's all-time greatest uniforms - ESPN
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune