Coloured glass perhaps. Large sheets of granite, marble or Caeserstone. Stainless steel or Aluminium. Timber boards. None are ideal or cheap really. There are many other alternatives but like everything, have pro's and con's.

Sounds like a very stressful situation! If there is absolutely no way the builder will allow you to change things (even if they did, I imagine they would ask you to foot the entire bill of pulling the tiles down and replacing all water proofing in addition to new tiles), I can make a few suggestions for improvement. Firstly I would suggest replacing the tiles above the vanity with a white mosaic, a patterned or a textured feature tile/strip. You could also use this same tile to replace the vertical feature in the shower. There are some beautiful shapes and sizes available to choose from. Secondly I would address the grout situation in this way: Floor - dark colour grout & Walls - Light colour grout. Lastly if it does not prove too difficult or expensive, maybe replace the tiles below the vanity with a plain white tile (could be similar size). Good luck and I am sure once you have a lovely mirror up and some crisp white towels, it will look just wonderful.

HI there! If your looking to save money, then perhaps look into a stainless steel or ceramic walk in shower tray instead? This negates the need for waterproofing / screening / membrane etc and they can look really awesome! Some top architects are using stainless steel trays with timbers and dark tiles and it looks amazing!! Your bathroom looks great with your current tiles on the floor and the beautiful timber joinery frames so I think stainless steel would work in really well with this. If you want to do a proper walk in tiled bathroom, perhaps talk to Warm Up. They do fully tiled walk in showers as well. (not just underfloor heating) and are pretty well priced for what they do. Or companies like the below, this way you get a fully waterproofed, warrantied system. https://www.warmup.co.nz/heating-products/tiled-shower-solutions/ https://plumbingplus.co.nz/products/newline-devon-walk-in-tile-showers-chrome/?gclid=Cj0KCQjwov3nBRDFARIsANgsdoEDYdqIeqSs3rRrHYbLz_EYd94uS6q8F14DoAar6b_Q_b9piXPpNugaAg3cEALw_wcB If you do decide to do a tiled walk in shower, I would recommend doing a completely different tile, rather than one that looks similar. It always ends up looking like you have tried to match and not very good so best to go with something thats clearly different. Perhaps a mosaic or a white 300x75 brick effect tile? Artedomus have some great ranges https://www.artedomus.co.nz/mosaics?gclid=Cj0KCQjwov3nBRDFARIsANgsdoGNwkaKMFgFIbGReFg8qFVIzMZjG5MPPsiLxKmAz9rdvsIa-TIfWRgaAucgEALw_wcB All the best with your renovation :)

how old is the house as you may need to check for asbestos on walls and floor and is teh whole house a slab on ground if not the floor under the tiles may not be concrete..., when replacing floor tiles i would also replace skirts to ensure waterproofing is above the floor all around (and avoid a potential leak at the join) and depending on what you are planning to do (ëg install new shower stall or wet floor?) i would also consult your tiler about "levelling the floor" which is much more complicated than we think.. and take your time removing the old tiles, especially on the walls as it's better to do as little damage (to the structure and yourself) as possible and you will find many online DIY instructions for retiling that are worth reading before you start...good luck with your project