Blue replaced brown on Padres uniforms in 1991, by FriarWire
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
Heritage Uniforms and Jerseys and Stadiums - NFL, MLB, NHL, NBA, NCAA, US Colleges: San Diego Padres Uniform and Team History
The Padres change uniforms, again, so let's look at their visual history
San Diego Padres - Wikipedia
My Town, My Team: Lee Jenkins on the San Diego Padres' uniform tribulations - Sports Illustrated
The (un)common threads of Padres fashion - The San Diego Union-Tribune
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
Modern mock-ups of Padres uniforms in retro colors - Gaslamp Ball
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
Haniger drives in 2, Crawford delivers tiebreaking single as Giants edge Cardinals 4-3 - 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