haven't seen him in years but I knew a guy who lived on an island off the top of scotland, built hit own house with polished concrete floors
he smashed up different colours of glass, after the concrete was poured and ready to power float it was poured on top and floated in... once it was set the floor was polished
looked awesome (from the photos, didn't see it in real life)
he had ufh, his whole down stairs was done like that :-)
