Besides the standard borders for the 20mm size you can adjust the color pallet with any of the 20mm colors. You can also adjust the layout of any border you see or even have a custom border of your own created.
GROUT & THINSET
Bisazza has formulated it's own epoxy grout called Fillgel Plus which is designed specifically to enhance the look of Bisazza's mosaic glass. This along with their own thinset are available for purchase along with Bisazza glass mosaic.