problems/questions with color washing my grout
Hi all. when I have grouted with a rich/dark grout, it somehow ends up getting into the nooks and crannies of my tesserai and making it look dirty. So I've tried colorwashing instead. From what I've read, that basically means painting my piece and then washing it off in hopes I can get the paint out of the tesserai but it will remain on the grout. But that hasn't worked well for me either.
I have tried various dark paints, enamel, acrylic. In my tests, I have used a smooth tesserai. The good news is that when washing off my piece, the dark paint has come out of my tesserai. The problem is it also comes out of my grout. When I wash it to clean off the tesserai, the grout color fades.
Is there a certain type of paint I should use? Is there a certain right amount of time that I should wait so that when I wash off my piece, I clean up the tesserai but not the grout? Any advice would be great. Thanks!