Re-coloring and sealing your grout with SuperiorBilt Grout Colorant is a simple process. With the SuperiorBilt Sealer and Grout Colorant Applicator, you can make the process even easier. The re-coloring process with Aqua Mix is easy - with the SuperiorBilt Grout Colorant applicator, you'll be done in no time. This tool also makes a great grout sealer applicator. With a small and large roller wheel it is great for grout joints of 1/4" and 1/8" in size.