Hello again, Definitely not too warm. I am not entirely sure what paint colour you are thinking of but as pointed out - easier to adjust paint rather than the other way around. If the tiles were really grey and the walls were that tone as well, it would be a very flat, souless look - the slight touch of warmth in the tiles is a good thing and honestly being so neutral your options are huge with colour of walls, particularly if you are intending to use this tile throughout. May I suggest you choose a paint colour and then use different depths of the same colour depending on sunlight, dark corners, more impact in certain areas etc to create the interest. Be wary when you have such a neutral, albeit very tasteful tile, it may be wise to adjust the paint in this way to lift the level of interest. Take a look at the following colours - Resene House White and Resene Concrete as starters - very unobtrusive. You could always go for a hit of charcoal in areas too. Avoid any "feature" walls - do the whole room - nothing wrong with strong, dark colour, even in small rooms - think powder room or laundry if you are not brave enough to do an entire, larger room. I am also assuming you will be introducing plenty of white trim on skirting boards etc - for what it is worth, my go to white is nearly always Resene Alabaster. Loving the sound of the carrara - such a classic. Hope that helps :)

My suggestion is first talk to the builder to see what instructions he gave the tiler as i'm sure he doesn't want a dissatisfied client. Most tilers will check with the builder before grouting especially when a colour is not specified in a contract. I would then ask if the grout could be replaced, from the looks of it it will only be a couple of hours work. There is nothing worse than having to look at something you are not happy with. I would not use the paint product as it will alway look like it is covering a mistake. White will look better. Make sure the mixer body is waterproofed or you will have a leak in your wall, the membrane should lap onto the body from the wall if it is done well. All the best.

Levarne Sobotker....although the tiles are beautiful you are very brave having those very glossy tiles throughout your whole house...from experience of having glossy tiles - they show every mark and really need cleaning multiple times a week - and you can't just mop very glossy tiles because the water marks show when they dry on - so you have to do small areas at a time and dry as you go - it will take an age to clean them if you have them through a whole house. We have gloss tiles in a couple of bathrooms and I would never choose them again. They are also very slippery when wet.

Ania, can you post photos when it is finished. It will be good to see those colours combined. I also love that inspiration photo and have it saved. I don't know what particular thing makes that bathroom stand out but it is beautiful. I want those exact same colours in my bathroom but a too scared to use timber tiles as I am scared they will date so am bringing in timber via accessories such as picture frames (I think). What is the grey tile in your photo and where is it from...it is very nice.