 Due to uniform experimentation in the 1960s, on two separate occasions the team's stripes were omitted.The first time came in 1962, when the Steelers began to wear two types of white jerseys, one of which featured a gold diamond on the sleeves in place of the stripes, with the "TV numbers" situated on the diamonds.These jerseys were primarily worn in home games when the team didn't wear their black jerseys, since the NFL at the time was encouraging teams to wear white jerseys so fans could see the team colors of their opponents.