Slytherin (Charms). Gryffindor (Charms). ’ S ’ for Slytherin / Green & White / Snake Charm. ‘ G ’ for Gryffindor / Red & Yellow / Lion Charm. Hogwarts (Charms). with Hogwarts House Charms. ‘ H ’ for Hogwarts / A ll Co lou rs / A ll An im al C h ar m s.