From 1981-2009, their burgundy jerseys were primarily used when the opposing team decided to wear white at home, which comes mostly against the Dallas Cowboys and occasionally the Philadelphia Eagles, and was normally worn over white pants.
After the white-over-white period which lasted from the mid/late 2005 season into 2006, the classic uniform of white jerseys over burgundy pants reappeared on November 26, 2006, in a home game against the Carolina Panthers.