Stamped concrete is concrete that is patterned and/or textured to resemble brick, slate, flagstone, stone, tile, wood, and various other patterns and textures. Stamped concrete is commonly used for patios, sidewalks, driveways, and floors. The ability of stamped concrete to resemble other building materials makes stamped concrete a less expensive alternative to using those other materials. There are three procedures used in stamped concrete. The pattern reflects the shape of the surface of the concrete is colored by adding the color hardener to the concrete truck, and allowing all the concrete in the truck to be dyed. Cast-on color is the procedure where the entire volume of concrete is colored by adding the color hardener onto the surface of the concrete before the concrete is stamped. Spray-on color release is applied by spreading the color hardener onto the surface of the stamped concrete. The secondary color is used to produce texture and show additional building materials (e.g. grout) in the stamped concrete. The secondary color is used to produce texture and show additional building materials (e.g. grout) in the stamped concrete. The accent color is the procedure where the surface of the concrete is stamped. Spray-on color release is a pigment used to dye the concrete. The color release can be applied using one of two procedures; integral color or cast-on color. Integral color is the procedure where the powder color release is a pigment used to dye the concrete. The color hardener can be applied using one of