I am pro glossy.

If it were mine, I would Not go with this tile choice.

It is too limiting. If you choose something more ivory you can introduce other colors as you like.

IF you LOVE LOVE LOVE green, go for it.

I think I would second guess the choice I am all for grabbing a color from art or counters for an accent but not when the color is really a slight undertone that I do not think will pull from that granite I like glossy so why not choose the gray in a glass tile larger format instead of the reg, subway do a matching grout then you have some shine but not something really not connected to anything. I can be wrond so maybe post pics of the kitchen and the FR

I think it's pretty and looks like it goes nicely with the granite. As the comment above says, it is limiting but that doesn't mean it's a bad thing. You do your kitchen with what you like, not to be "safe" unless you're selling very soon. What color are your cabinets? What is your floor like?

I like the subtle green tile you show above, and I like glossy.

This is a hard one. I like the green sample A LOT as reading on my monitor -- it gently pulls out the tone in the countertop. BUT do the tones align well in your kitchen, in your light? I can also see a bit of gold in the granite, so if the read is more gold then no, don't go with the green tile. If the green tile pulls out and gently highlights any green tone you see in the counter IRL then go with it. It's just really hard to an obvious yes or no based on looking at samples on a monitor.

Do not be afraid of color. Color is our friend. If chosen well it brings a space to life. The key is the choosing well part...

What color are your cabinets. Show all the elements in one pic. The cabinets with countertops and the backsplash tile vertical, just as it would all be seen in the kitchen.

I am pro glossy. Cleans up nicely

I'd save the green for the wall paint and accessories so you have more color flexibility.

try other greens. probably lighter. the window is recessed and makes a shadowy space there which you cant ignore. dont create a cave back there with this particular shade. try other lighter tiles.....a variety of colors will work. you can go a little eclectic..you say "off beat" but a tile with a not too ordinary appeal due to the alcove can be a nice little spot. More tile searching I think.

I would be afraid that once it is installed, the green will look out place and not relate to the granite.

If you want green, perhaps choose a different granite.

I agree with your husband. Go creamy.

You can add green walls and green accessories and art.