I saw the same ad, was pretty sure I had the name correct but could not find the website. I just remodeled my kitchen last year and got a light grout that I don't like now. Grout Buddy was advertised and does look easy. I had Googled 'change my grout color' and found a couple of products. I have over 400 feet so am reluctant to start the project. Home Depot carries a line to change grout color. They stock about 5 colors, however they will order any color you want. I like the attached applicator on the Grout Buddy. I had bought some artist brushes for my project. I'm inspired to go on and tackle it afterseeing the tv ad demo.