Decorative Concrete Systems, Walla Walla, WA, has designed a new roller tool to enhance the grout lines of imprinted concrete. The Delux Roller Tools comes in 3/4- and 1/2-inch and a "V" design or can be custom made to fit your imprinted pattern.They are small enough to fit in your hip pocket.
For more information, please contact them at 800-938-4148 or visit the Decorative Concrete Systems Web site.