Citadel Technical Paints by Games Workshop are high quality acrylic paints designed to add all sorts of special effects to your models. Perfect adding texture to your models' bases Stirland Mud makes an eye catching way to finish off your models. All Citadel paints are non-toxic, water-based acrylic that are designed for use on plastic, metal, and resin miniatures. 24 ml of Stirland Mud.