From 1955 through 1967, the Bruins had a gold home sweater and a white road sweater, and for several of those seasons featured a black third sweater. The Pittsburgh Penguins would later introduce a gold third sweater in 1981, worn occasionally at home for two seasons and exclusively at home for Sunday games only in the 1983-84 season before retiring it. As part of the NHL's 75th anniversary in the 1991-92 season, for select games the Original Six teams wore throwback sweaters based on designs the teams wore at some point during the first 50 years of the league.