I think you need to decide on a color scheme first.

I googled "almond color scheme" and got this link http://colorpalettes.net/tag/color-of-almond/  . You can probably find others. That will give you the color for towels, wall art and help you to choose a wall color. Do what the decorators do - choose a color scheme and buy the soft goods (towels, shower curtain, wall art, decor items) then find the right wall color last. Much easier to choose from the hundreds of paint colors, after you have chosen towels etc.

Or look for rooms that have an almond color in them e.g. living rooms with almond color sofas. You can be inspired by the color scheme of the accessories and wall color even though it's a different room

I think your wall might end up a paler version of your almond fixtures - or maybe a darker version like a tan color.

I think you could go with just about any hue. Go to a paint store, find a large almond swatch that matches your fixtures, then see how many different paint colors you can go with.

I have almond walls (BM Collector’s Item). They go with white wood trim, adjacent greige walls, gray furniture, blue decor, espresso floor, etc.

Try to find something you can get excited about. Dark colors could be interesting - I saw a pic with dark taupe walls which I would never consider but the pic looked pretty good with the almond fixtures. Open your mind and grab a bunch of swatches to live with for awhile.

You could try to use colors like white and espresso to break up the almond and “whatever” colors. It may take some work to figure out how to insert separators.

Another idea is to think of the almond as yellow. I keep thinking of yellow and navy bathrooms, but they mixed in a lot of white. Look at Sarah Richardson’s work - she did a yellow bathroom and a yellow laundry room that were super cute. Find pics of yellow bathrooms that you like.

(Sorry to ramble.)

EDIT: Google “yellow bathroom”. Look at the shower curtains and the images for palettes. It looks like most are going with gray and white. You would have to find the right tones of gray to go with the almond. A mix of light and dark grays with a lot of white seem to be the most striking.

Alternatively you could bring in contrasting blue accents (more intense than what you have), or go with warm earth tones all around.

You could embrace the almond. Get an almond toilet so everything matches. Painting the walls a slightly deeper taupe would include the almond and tone down the cultured marble yellow. Then you've got a neutral clean slate to add whatever you like. I could see some bright pops of coral in your space, but you could use any color.

Forgot to mention you can get thin stick-on mirror frames online in your size. They have wood colors, white and black for sure. You could always spray paint them if you wanted too. I've used Rustoleum spray paint many times with ease.

Since almond is a neutral color, you could go with about any color scheme that you love! I used to have an almond colored stove and refrigerator in our old house and it looked great with about everything. Since you do not like the blue, how about aqua or turquoise, or about any color in the green family.

My baths have some white (toilets, tubs) and off-white / almond (countertops, shower wall panels). The walls are painted a lovely greige color by the previous owner and it seems to work really well. I think the mixture of neutrals help balance each other.

Almond is a neutral color, so really it can work with just about anything. Perhaps just try looking at some almond bathrooms on here to get some ideas.

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Upscale Observatory Park Interior Design: Bathrooms · More Info

I'm one of few here who dislike gray, so what I'm about to say matters...(to me, anyways)

You can do a cement color gray in here and it will look amazing. I absolutely love this combination...

Here's the exact color that I'm talking about in this frame...

https://www.kylieminteriors.ca/the-best-paint-colours-for-an-almond-bathroom/

Get a new, almond toilet and it will be fabulous...