There are various masonry-coloring materials out there. On UK company in the link does this work, and here is a US company that sells masonry washes. http://www.virginialimeworks.com/products/patriot/ppgeneral.html There is going to be a fairly profound learning curve to achieving the effect you need, but it's the best solution if you can get the color right. These mineral-based washes can give a real good effect without a painted-on look. Casey |
Here is a link that might be useful: brick tinting