Games Workshop Citadel Drybrush: Necron CompoundCitadel Dry Paints by Games Workshop are high quality acrylic paints designed specifically for dry brush your models. Formulated with a thicker texture, dry paints will catch on raised edges easily highlighting and capturing fine details. All Citadel paints are non toxic, water based acrylic that are designed for use on plastic, metal, and resin miniatures. 12 ml of Necron Compound.