Abstract: Exterior trim pieces for use on exteriors of buildings. The exterior trim pieces include outside corner trim pieces, inside corner trim pieces, and framing trim pieces for providing an aesthetically pleasing appearance to an exterior of a building. Each of the trim pieces include a body and at least one flange extending from the body to define a concealing space for hiding siding ends and the like. Each of the trim pieces also includes at least one weather strip to assist in sealing the trim pieces to the exterior to prevent the intrusion of water and other elements behind the trim pieces. Each body of the trim pieces is preferably formed from co-extruded rigid cellular PVC and an acrylic-based protective layer. The rigid cellular PVC and the protective layer are formed in matching colors to yield colored-through trim pieces.