Doctors' gowns (PhD, DMus, and EdD) conform to the Intercollegiate Code in design. They are made of black material and the velvet trim on the sleeves is Philosophy Blue for the PhD and DMus, and Light Blue for the EdD. Doctors' hoods conform to the Intercollegiate Code in shape, size, and colour. They are made of black material to match the gown, and have a full lining of gold satin with a six-inch green satin chevron. The velvet trim distinguishes the two degrees and matches the velvet trim on the gown's sleeves. There is narrow green piping where the gold lining joins the black material. Mortarboards are the standard black trencher shape with black tassels, which are worn forward and to the left.