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
Brown has been part of the Padres' history since expansion, by FriarWire
Padres uniform history: The 1970s - ESPN - SweetSpot- ESPN
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Padres uniforms: Visual history of brown, yellow, blue, orange, sand - The San Diego Union-Tribune
Order Restored to Uni-Verse as Padres Bring Back the Brown
Blue replaced brown on Padres uniforms in 1991, by FriarWire