ROYAL BRUSH-Royal & Langnickel Essentials Acrylic Color. Essentials Acrylic Color is the next generation of acrylic colors. The colors remain bright, intense and permanent when dry and they can be dilute with water and mixed with acrylic mediums. They cover a large area and are suitable for a variety of surfaces. This package contains one 120mL/4 fl. ounce tube of acrylic color. Available in a variety of colors: each sold separately. Conforms to ASTM D4236. Imported. 1 Pack of 1 Piece