Matisse designed the priests' vestments, using the traditional ecclesiastical colors of the religious seasons: purple, black, pink/rose, green, and red. The Pope requested that the nuns send the vestments to Rome to be put in the Vatican's museum of modern religious art. The nuns made copies of five of the sets of vestments, including chasuble, maniple, stole, and covering of the chalice, and sent them to Rome. vestments
pink From Father Couturier's Diary

"We talk about the black chasuble: I tell him (Matisse) it's not a sad chasuble, but a chasuble of the Resurrection. He replies, 'That is what we want, isn't it? Death isn't the end of everything, but a door opening.' Tears promptly well up in his eyes."