Yes Grout can be colored to almost any color imaginable. And is a very simple product to apply , Usually done with a toothbrush to rub the colorant into the grout joint, grout colorants are usually a very effective .But they do have limitations and need to be applied on a properly prepared grout surface .You can find more information on grout recoloring by visiting our web site @ http://members.aol.com/groutdye We also sell Aqua mix grout colorants. Good luck Michael C. Malizia The Grout Dye Company