The Baltimore Ravens uniform combinations are: purple jersey and white pants (standard, introduced in 1999), white jersey with white pants (introduced in 1996, often worn for away games), white jersey with black pants (introduced in 2008, often worn in away games and at the season-home opener), purple jersey and black pants (alternate, 'not often worn,' introduced in 1996), black jerseys and white pants (alternate, introduced in 2008), and black jersey and black pants (alternate, introduced in 2004). Purple jerseys are most often worn during day-time home games. The black jerseys are worn only at home games, usually games that are played at night. The white jersey combinations are worn at most away games. However, the black pants and white jersey combination is usually worn by the Ravens for their first home game of every season. That tradition was started under head coach John Harbaugh in 2008.