I know people here keep saying that Taj Mahal needs to be the "only star" and you have to use a plain backsplash ... but I think most of those people do not have TM installed in their house! I'm on my second kitchen with TM and from most angles a few feet away, it just appears as a beige counter! Yes, you need to be careful what you pair it with, but plain white tile isn't the only tile that works with it.

Would the backsplash thinset or grout seep into the cut back edges of the countertops?

Thank you for these ideas. I really like the White Haze posted above. I went on the website: https://akdo.com/?s=haze and it looks like that color/materials comes in many different sizes and patterns. I'll try to get a sample.

That slab is gorgeous! Your choices looks beautiful! I like that the stone has some very light turquoise swirls to bring in the colors of the glass tiles. Maybe even if it is a marble, it won’t be so bad in a bathroom? Shoots I thought I had a better photo of the bathroom to show you. I did glass tile for the waterfall and then the backs of the two niches. My thought for the shower floor was to look kind of like lava rock. This is our little hawaii cottage. Yes the window is spun upside down. 😆 Vanity and sparkle white quartz is the same as kitchen. And also I have admired your kitchen for a while! I love the fantasy brown and backsplash! Thanks for let us hi jack! Please keep us updated on what you decide!