Acrylic shapes include 6 primary and secondary colors (red, blue, yellow, green, orange and purple), clear and 3 opaque colors (black, white and double-sided mirror). Approx dia. 5.9". Children will learn about primary and secondary colors, and the difference between opaque and translucent. Colored Splats are ideal for use on a light panel to explore color mixing. Each Splat has an approximate diameter of 5.9". Removable coating protects the surface before first use. Set of 10 Splats each measuring approximately 5.9" in diameter.