Experiments are great, nothing wrong with that! Just as long you experiment on test pieces of your own not on customer jobs, hey, experiments bring on new inventions all the time, so good on you I say! Who knows what you may think of in the process! Just whatever you do don't mess with your customers. Until then it's just playing, but useful play all the same, good for you, go for it, and tell us what you'll think of next!
Just bumping some threads related to glitter grout. You can add and view glitter grout pictures in the new media gallery. Ask questions about glitter grout in the adhesive and grout forum.