I have a wall type which is composed of 3/4" stucco, wd. sheathing, metal studs and Gyp. Bd. I have attached two horizontal sweeps (trim boards) spaced 2 feet apart. In between the trim boards I would like to introduce a separate color of stucco. I've tried splitting the wall vertically and adding a second material, but the wall then becomes 3/4" thicker...not what I'm looking for, nor what would happen in the real world. Does anyone have any suggestions on how to accomplish this?
Thanks much.
grover