COLORFUL: 5 powdered pigments to choose from LESS IS MORE: One 10 ounce jar will color one 50-80 lb. bag of concrete or mortar READY TO USE: No preparation required SAFE TO USE: Made of synthetic iron oxide SYNTHETIC: Less variation in color than natural iron oxide Akona Concrete & Mortar Color gives you a simple way to color your concrete, masonry, or grout project. Just add one canister to a bag of concrete, mortar, or grout mix to give your project a more decorative look.