Black clergy shirts often symbolise a level of formality and are the most common clerical attire. In the United Methodists and other Catholic branches. purple is reserved for bishops but can also be used for services concerning repentance. White is used for baptisms, weddings and funerals while red is used as both another colour that signifies being a bishop as well as being in remembrance of martyred saints. Cardinals often wear maroon to symbolise their higher position in the Church.