After many, many months, the seahorse mural is finally completed and grouted to the wall of the shower recess.
Originally traced from a 3D carved wooden seahorse my parents once brought back for me from a Pacific Island cruise, the eyes and bubbles are glass hemispherical "stones". When the white background started looking too stark, seaweed strands and a school of fish were added.
For a time, I was flummoxed about the grout. With white tiles for the background, white grout would have looked wrong. I considered adding a grey coloured oxide, but how much would be needed? Then I found green ready-made grout in a squeeze bottle (now a deleted item, sadly) from Riot Art & Craft in Penrith. They also had vibrant pink.