Use the premium Prang Watercolor Refills for your art and craft projects with great convenience, as it fits easily with Prang Watercolor Sets. The watercolor refills have semi-moist consistency and intense pigments to get rich colors. These watercolor refills conform to ASTM safety standards and can be safely used by children. Paint Sub-Category: Watercolor; Color(s): Assorted; Color Family: Multicolor; Number of Colors: 8.