I should have mentioned we are aiming for a traditional 1920s look with hex tile on the floor and white subway tile in the tub/shower surround. The tub is medium gray, toilet will be white.

Lighter beige or grey would be pretty. I would do either the riverrock or the small tiles that are in the shower, for the backsplash. I too though was thinking of doing nothing for the backsplash because it does look so pretty already. As for the Weird Wall I suggest three, say 12x12, framed pics of nature. White mats with wood frame to match the mirror frame. I would do sepia colored pics of leaves or trees. You could save a bundle by going outside and taking some pics yourself, get readymade frames if you can get color to match. I like the idea of a simple plant on the vanity. Maybe a white, ceramic pot. I would cover the "dirt" in the pot with small river rocks. You can get them at the dollar or craft store pretty cheap. Or to save even more you can get some out of the yard, like pea gravel, and shine them up with spray on sealant or I think when I was a kid we used glue.

Linda, your home is lovely as is. IMO, if you darken the cabinets in a room without much natural light, it may get claustrophobic. I like the airiness you currently have and if you absolutely must redo the cabinets, could you consider lightening them or going off-white to work with your appliances? But leaving them as is works well since they blend with the lighter toned woods throughout. Try new hardware before stain or paint. It's a relatively inexpensive way to provide fun and oomph! Consider changing the dark valance to either a valance or roman shade in the colors you love -- watery aqua & chocolate wide stripe or print -- but only if you slip-cover the sofa and chairs. A flat, non-shirred valance in aqua banded in chocolate might look fresh. You can then slip-cover the sofa in a less imposing tone and reupholster the chairs in a complementary print. If you stay with the current upholstery, then pull your valance colors from the chairs, rug & marble. I'd opt for the simpler style my3dogs used in her office/sewing room. Stick with a solid and contrasting band so they don't compete with the chairs. Your wall color can then flow from the valance colors. Just remember, one change usually leads to many others as each component impacts the whole. I'd reposition some of the furniture to make the most of what you have. Try putting the lamp and table on the other side of sofa so that the area opens up a bit. Or you could place the table between the chairs and exchange with the smaller lamp, but in any event you still need to get the sofa as far away from the tv wall as it will go so it doesn't seem so squished. The area on the tv wall to the left of the fireplace is calling for a large airy palm or another tall plant. And the TIVO storage is too close to the lovely buffet. A mantle might be nice but you definitely need a large beautiful print over the fireplace in colors and theme that makes YOU feel peaceful and happy. The storage box under the window in the breakfast area is disproportionally small. Can you find or make a console (even a shelf ledge that will fit) even if you need to keep the storage under it? On my monitor your neutral paint looks good from the hall. If you change colors, I wouldn't go darker than the 2nd color on any of the strips. My preference would be #2 on the last strip or #2 on the 2nd photo. Let your upholstery decision and marble tones guide. Please buy a $5 SW sample and put a large swatch up for several days so you can live with it in all light conditions before you decide. Most of all, enjoy the process of finding what brings you and your husband joy in this phase.

we have a b/w basketweave in our bathroom that is woodwork with blue walls. ours is marble, but they make a porcelain. https://www.flooranddecor.com/tile-decoratives/white-and-black-basket-weave-ii-porcelain-mosaic-100104678.html?gclid=Cj0KEQiAqdLDBRDD-b2sv6-i6MsBEiQAkT3wAuhjdaD8YscoZLtiqtR-Z7MW8BanstGv6_7Ufk2zd_YaAnsK8P8HAQ