These tiles are a concrete look porcelain tile which has the benefit of not being as porous as natural stone, hence won't stain. The grout was a dark grey grout selected as a close match to the colour of the tiles.
'yay' or 'nay' to walk in showers
painting studio flat with grey green slate floor and timber doors
Advice Needed - Overwhelmed !
Seamless Bathroom Finish with No Grout Lines!