I was surprised when I went to pick paint for the master bathroom and master bedroom. I thought I was going to easily go for a very light blue gray like I have in some other areas of my house. But the lighting just didn’t make those colors look good. So sometimes you have to be flexible and go for a different undertone. In my case it was going more towards the green undertones, like North Texas says. You just need to be flexible and find the undertone that looks best with your lighting.

If you look at the undertones in your hard surfaces (floor and countertops) you are dealing with a pinkish beige in the floor and yellow on the countertop. I don't think it works to try and use every color on the color wheel (red-brown on the floor, yellow on the countertop, now blue yellow on the walls). So the green works with the countertop, obviously, being green walls (= blue+yellow). So you could paint the floor, like with a garage paint, that is tough as nails. Then I think you'd be much happier with your green walls. I think your undertones in your trim is throwing things off too. In fact, if you get your hands on a Sherwin Williams paint fan deck, they set up their colors in the color wheel format: purple-blue-green-yellow-orange-red) which is fabulous obviously. So you find paint that matches your fixed elements (floor and countertop) and then select colors from their "neigborhood", in your case, you'd be hanging on the yellow-orange-red side of the deck. It is when you try to match opposite sides of that paint fan deck that you run into the issues you are seeing with your room colors. White also has the same undertones. So again, if you are using a "blue" white like snowbound, you will run afoul of your yellow countertop. You might be happier with a more yellow white like Westhighland white. By the way, the green paint has a blue-ish tint to it, so a warm white, like the countertops, won't look as good. It will make whatever the brown element look tired and old. If you leaned into a warmer green, more of an olive, it would be more cohesive, but that won't address the color in the floor. You would have to "lean into" the color of the fixed elements if you aren't going to replace them. Next time you go to the paint store, especially Sherwin Williams, look at their paint chip color wall and notice the color wheel in their display. And if you are picking colors from opposite ends of that wall, just know you might have issues.

I love the colors, boldness, and tropical feel of these two: https://www.houzz.com/products/york-at7093-tropics-fiji-garden-wallpaper-black-teal-aqua-lavender-yellow-pink-prvw-vr~138545879 https://www.houzz.com/products/maui-black-botanical-wallpaper-bolt-prvw-vr~71503417 Love the simplicity of this pattern, but still has a big presence: https://www.d-marie-interiors.com/products/nextwall-luxe-haven-maui-palm-leaf-wallpaper-ln20022 I believe every room needs an animal print. ;) https://www.anthropologie.com/shop/jungle-leopard-wallpaper?category=nature-wallpaper&color=001&type=STANDARD&size=One%20Size&quantity=1 This one comes in four different colors, all look great: https://www.anthropologie.com/shop/rifle-paper-co-peacock-wallpaper?category=nature-wallpaper&color=001&type=STANDARD&size=One%20Size&quantity=1

Here is one suggestion... Dark gray vanity will pick-up on the gray in the granite. I show rectangular mirrors but it would also work with round ones. White towels are the best for guest bathrooms. A nice plain white but textured shower curtain.