 In 2013, the Cowboys intended to wear their 1960s throwbacks, but chose not to do so after the NFL adopted a new policy requiring players and teams to utilize only one helmet a season to address the league's new concussion protocol; rather than sport an incomplete throwback look, the Cowboys instead wore their standard blue jerseys at home for the first time since 1963.In 2015, the Cowboys resurrected their 1994 white "Double-Star" jerseys only this time wore them with white pants as part of the league's Color Rush, a trial run of specially-designed, monochromatic jerseys to be worn during Thursday games.In 2001–2004, and again in 2008, 2010, 2017, and 2018 the Detroit Lions have worn throwback uniforms based on their very early years.