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...)

Hi Brandi, Thanks for your advise I will take a look at Pintrest. I have decided on the white tikez & light grey grout as I hzve been advised about that colour schem from 2 tilers. What colour bench tops are you having. I am still deciding on black stone or grey stone with a f,eck thru it

I have white floor tiles. We used the plain, concrete grey. Best thing ever. Easy to keep clean and break up the plain look. Good luck !

Have you priced having the whole lot re waterproofed and tiled? You are already doing the hardest section, it may not be that much more to do the lot. Otherwise agree with above match to the white tiles in the rest of the bathroom. But it will always look like a repair.