I have to say you have one incredible product and I could not be happier. When we first installed our tile we knew right away the grout was way to light and we were so upset and thought the only option was to either live with it or dig it all out and start over again. I googled grout coloring and staining and found your product. I have to admit I was skeptical however we decided to go for it what did we have to loose. We ordered a color and it was not right it was still to light and that was a let down because I thought for sure it would match great. You encouraged us to send it back and try another color so I decided to send you a sample tile and have you do your magic and make it match for us to avoid another wrong color. You created a custom color just for us and we could not be any HAPPIER! Thank you so much you have saved us so much work, time and money. Thank you so much.