Ok so depending on floor colours and overall look that she is going for I think (if she is really adamant) that the blue could work if you change the Amaro cabinets to a whiter shade - this will give it an overall crisp, oceanside feel with the warmth of the soft walnut. Otherwise I would contrast it more with a mid-tone colour splashback in grey/brown tones. Again this totally depends of her tastes... Here's a photo that you could show her with the blue splashback - granted it is a little deeper than her selection but at least she can see it on a realistic scale and of course the timber/white cabinets are flipped in this one. Hope some of that helps!

Hi Jaccco, over the years we have found that white grout between white tiles can actually yellow over time and so whenever we are asked this question we like to recommend using a pale grey.

Hi Mc10. I bought the Calcatta subway tiles on a mesh and will use this Lithofin MN Stain-Stop Tile Sealer once every 3 years. I’m still in the middle of the kitchen reno but got my marbles and they’re exquisite. https://marbleceramiccorp.com.au/lithofin-sealant-germany/1026-lithofin-mn-stain-stop.html?gclid=Cj0KCQjwr-SSBhC9ARIsANhzu16AK7RpYQb4yMtmHougfhBuuiyMAu930aAIj-0gu55tx1mM4dc-IOkaAr-ZEALw_wcB

Hi Mimi, Your stone (probably Marble or Reconstituted stone as these can be damaged by acids) has been factory finished by diamond polishing to get the gloss level it has. A sealer will only help protect that factory finish and unfortunately it will not bring it back. The bad news is it is not possible to repair and so removal and replacement is the only real fix. This may be covered if you have Accidental House Insurance, but other than this, I am afraid there is no easy fix, sorry. Hope this helps though, Malcolm.