Martha Stewart Crafts Multi-Surface Acrylic Craft Paint Set (2-Ounce), PROMO861 Chalkboard Martha Stewart offers a variety of traditional colors as well as new fun and trend colors in a smaller 2 ounce bottle Product is water based Product is non toxic Lets you turn any porous surface into a chalkboard Perfect for craft and hobby painting techniques, including brush painting and detailing, screen painting and stenciling