Blue replaced brown on Padres uniforms in 1991, by FriarWire
History of the San Diego Padres - Wikipedia
Best Padres Uniform Patch - Gaslamp Ball
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
MORE
History of the San Diego Padres - Wikipedia
Blue replaced brown on Padres uniforms in 1991, by FriarWire
Padres Unveil New Uniforms With Brown-and-Gold Color Scheme - Sports Illustrated
The Padres' Journey From Unique to Undistinguished (and Back Again?)
Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
TIMELINE: How Padres uniforms have changed
The Padres change uniforms, again, so let's look at their visual history