For anyone interested in learning how to do mosaics, especially anyone interested in figuring out, “what the heck grout color should I use on this thing?!”, I found the COOLEST free online tool that can help you to choose grout colors for your mosaic piece; check it out..(Also; they hae all kinds of other helpful info. & links on this excellent site out of the U.K.)…

http://www.thejoyofshards.co.uk/projects/pr2mirr.shtml