I am playing with exterior products and colors to replace my siding and maybe paint the brick areas. I have a rough elevation and need to be apply and reapply textures, such as brick, that I can then color and recolor. Gray shingles? Brown shingles? Tudor in brown or Tudor in grays? Doing this dithering in advance will save my architect many decision debates and both of us time, so I can clarify my choices before he does his plans and renderings. It will be fun for me if I don't have to draw every brick.