Creating a Brick Look: The Base Layer is Integrally Colored Charcoal Gray. This will be the Grout Color. The Top Layer is Integrally Colored Spanish Red and it is applied at about 1/4″ thick. This will be the Brick.
The below picture is The Spanish Red Top Layer is Carved Through to expose the Charcoal Gray Base Layer. The Carving Tool also scrapes the Base Layer and opens the pores so it looks like grout. Integrally Coloring the Top Layer allows the illusion of the Brick being colored on all sides, without getting any color into the base coat grout lines.