Bishops and archbishops wear a Roman purple biretta with matching pom. Cardinals and bishops may also wear a black plush hat or, less formally, a biretta. The zucchetto and the biretta are scarlet, the distinctive color of cardinals' vesture. The zucchetto is always worn beneath the mitre or the biretta. Priests wear a black biretta with a black pom. The celebrant and assistants follow the acolytes into the church wearing the biretta. A tuftless biretta (only diocesan clergy wore tufts) and a ferraiolo (cape) completed the look. Canons and deans could wear a black biretta with a red pom. Some Anglo-Catholic clergy still wear the biretta. Some St. Francis fathers wear a brown biretta with a black pom. The pope does not make use of the biretta. The biretta was considered as possible headwear for female barristers in England and Wales. The origins of the biretta are uncertain. The 'traditional' "Angelicum" biretta is white to correspond to the white Dominican habit.