Last time Black Alternates were worn? : r/49ers
Ranking NFL's current throwback jerseys: Eagles' perfect 'Kelly Green'; high marks for Patriots, 49ers
49ers officially unveil black, red and gold alternate uniform for 2015 - Niners Nation
49ers First Alternate Uniform
Report: 49ers lobby NFL to wear throwback uniforms in Super Bowl
49ers officially unveil black, red and gold alternate uniform for 2015 - Niners Nation
NFL to allow teams to use alternate-color helmets starting in '22 - Niners Nation
NFL to allow teams to use alternate-color helmets starting in '22 - Niners Nation
All 32 NFL Teams unveil new 2016 Color Rush uniforms – SportsLogos.Net News
49ers, rest of NFL set to wear Color Rush uniforms on TNF this fall, per Lions President
49ers Officially Unveil Red And Black Alternate Uniform, Raiders Mock New Color Scheme - CBS San Francisco
49ers Must Never Wear Atrocious All-Black Uniforms Again - Sports Illustrated San Francisco 49ers News, Analysis and More
49ers ironically will wear 'home' red jerseys for Week 2 road game vs. Rams
49ers Wearing 1994 Throwback Uniforms Against Rams On Monday Night Football – SportsLogos.Net News