Hi, LAURA: I remember you posting a long time ago - glad you're back. IMHO, the Polyblend grout is a good one. I used it when I tiled my kitchen counters/backsplash, and have had no problems. I think you can use it inside and outside. Don't know about colors, but you can color it, if your store only carries white. I mix my own grouts to make charcoal, so never use white. Since I've been using Mapei from Lowes, I'm so happy w/it, I have no reason to change. Hope you start mosaicing soon. I know it's late in the day, but break something TODAY, and glue tomorrow.

I've used polyblend and laticrete brands, they seem about equal. Get the sanded types

The sanded polybelnd is all I use and have never had any problems with it. Anxious to see your project!!! Pics please...

I use polyblend, I like it actually. It seems smoother and more velvety than laticrete, the only thing Ive noticed is I have to add more water because it seems to want to really thicken when it slakes.

Thanks, all of you. I'll get the polyblend and try it. Hope to have something done in a few days. I'll post pics.