Pope Benedict XVI, sporting a fur-trimmed hat in the rich red color of a Santa hat , arrives in St. Peter's Square at the Vatican, for his weekly general audience. The red hat with white fur trimming is known in Italian as the 'camauro.' It was popular among pontiffs in the 17th century. More recently, it was used by Pope John XXIII, who was also buried with it in 1963...December 21, 2005 .... December. 25, 2007.. .