Schots have heritage style pencil tiles in black, dark green and burgundy https://www.schots.com.au/tiles-parquetry/ceramic-tiles.html#q=&idx=schots_production_default_products&p=0&hFR[categories.level0][0]=Tiles%20%26%20Parquetry%20%2F%2F%2F%20Ceramic%20Tiles%20%2F%2F%2F%20Bullnose%20%26%20Pencil%20Borders&nR[visibility_catalog][=][0]=1&is_v=1. Blue might be tricker to find.

Thanks everyone for their comments! Update: husband has 'over-ruled' on this one. Forgot to mention that the vanity top will be Night Sky Ceaserstone (ie black). So he wants the dark grout. We will definitely be using mould inhibitor and ensuring everything is well sealed. It's all his fault if it looks horrible ;) Will post photos once fully complete. (I am now a little scared...)

I am just wondering whether it is a good thing or not to go with solid colours like the dark blue (prussian blue), grey floors and white on other walls all in tiles. I see that a lot of designers seem to do a pattern on one wall, but I haven't found one suitable and whatever I do, I just don't want it to look out of date in 5 years time. I am not sure how about much of the prussian blue tile is appropriate in order for it to be noticeable but not too overpowering.

expensive to lay them but worth the money, the bathroom looks fresh and contemporary but more contrast could have been used maybe the floor tile running up the end shower wall, may have been a highly pattened tile, or different shape, smaller of bigger tiles, but that is nit picking. love the timber vanity maybe a bit to close to the floor, but 9 out of 10.