Great advice dts builders! Another way to minimise visible grout discolouration is to use rectified tiles to minimise the width of the grout join in the first place. Using larger format tiles will again reduce the amount of grout needed, and where your design allows, use a dark colour grout to restrict the amount of dirt and grime that is visible.

You could use this great looking tile as your vanity splash back, your shower recess or rear wall and use a standard lower cost coordinating white tile as a secondary filler. Like he main walls in a satin rectangle laid in a stretcher bond like a giant subway, rectified with minimal grout, and then this gorgeous tile with a mid grey grout to emphasize the fantastic form. It would make for higher impact of the feature tile, and add functionality by fully tiling all areas. Easy to clean, reduces moisture related issues or even just unsightly condensation and cleaning scenarios. Mould retardant additives can be put into standard paint, although in a bathroom, I'd go a low sheen white with mould retardant for this reason. Low sheen should be flatter than satin, little shine at all, but equal to a matte tile.

Hi ucheokeke1 colour matching to the tile should be relatively simple as already explained. However even if you find the right paint colour, unless you ask for optically clear glass (known as Starphire glass in Australia) your colour will be skewed by the natural green skew of ordinary glass. If you can source a coloured glass splashback that's close to your chosen colour from a standard range you will be OK with normal glass. If there is nothing similar in a standard range, the only way to ensure true colour representation is to pay the extra for optically clear glass. I hope this makes sense.

Many thanks Dreamer. Unfortunately, we are a long way from Perth (closer to Brisbane), but as you say, the company may be able to refer me to a local supplier that has similar stocks, or a kitchen company here may know of a supplier. Your suggestion makes sense and I think that is the ideal solution. Tiles are easy to keep clean, very practical and durable - it's just those awful grout lines that are a problem, so if I can get very large tiles (even with just one or two lines) there should be no problem. BTW. Right now, we should BE in Perth visiting good friends if only this virus thing hadn't happened! I love WA.