When you enter Trinity Rep’s Dowling Theater these evenings you just can’t miss the mess. Designer Eugene Lee has outdone himself, creating a scene that looks like a teenager’s bedroom on a very bad day. The walls are covered with large carpets, all conflicting in tone and color. There’s a distinctly un-comfortable looking iron bed. Lamps from all eras abound. A Danish modern table, a keyboard from when, the 1960s, maybe? And above all is a huge crucifix, on which the murdered Jesus is nailed.