Citadel Base paints by Games Workshop are high quality acrylic paints specially formulated for basecoating your miniatures quickly and easily. They are designed to give a smooth matte finish over black or white undercoats with a single layer. All Citadel paints are non-toxic, water-based acrylic that are designed for use on plastic, metal, and resin miniatures. 12 ml of Mephiston Red.