Sometimes it is easier to come back in and post photos in the comments

Thank you. I figured out that I can't upload the photos from my phone, so I uploaded the only one I have on my computer. Still trying to get another to upload.

Ugh, it is uploaded but isn't showing. Let me try adding it directly in this comment.

the green fixtures can look fresh, if you replace the formica countertop and reset the sink.

Quartz with no applied backsplash. Replace the medicine cabinet with something current.

Remove the marlite® tile panels and tile with a white subway tile... a fun colored floor tile I'd look for a mosaic of earthtones green, reds, golds, ...wayfair.com has a great selection of affordable tiles.

Thank you. We definitely plan to replace the whole vanity and reset the sink. We also plan to replace the mirror above with a recessed mirrored cabinet or maybe an oval wall mirror. What color quartz are you envisioning for the countertop? The walls aren't actually tile panels. They are original 4x4 tiles with a mottled green over a white background. Yes, earthy tones are what we are looking for. Do you think we could incorporate natural wood tones in with these green fixtures or would it be too busy? What would you do with the upper walls and ceiling?

Here's tons of ideas. https://www.google.com/search?q=1950%27s+green+bathroom+fixtures&sxsrf=ALiCzsYpeTB2nKnl-GZOiJG2DQY3h7zqdg:1664569591954&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiZv-35rL36AhX0MVkFHVtQDBoQ_AUoAXoECAMQAw&biw=1440&bih=709&dpr=2

I think a wood MCM vanity would look great. Something like this? https://retrorenovation.com/2016/02/02/1960s-bathroom-remodel/

This is a good small space vanity that comes in wood https://www.ikea.com/us/en/p/godmorgon-sink-cabinet-with-2-drawers-brown-stained-ash-effect-00457909/

You should be able to get a matching or closely coordinated seat at Bemis:

https://www.toiletseats.com/how-to-choose-a-toilet-seat/shop-toilet-seats-by-color/

Thank you guys! These are helpful.

a great shower curtain that brings in some of the green (think leafy patterns) and some matching bath mats would go a long way.

White vanity with drawers or wall-hung sink, large medicine cabinet, bright sconces that don't catch dust, 4-plug GFCI outlet, new exhaust fan with light over or near the tub. Flooring could be whatever sheet vinyl you like in a light-colored palette. If you are lucky, there will be tile behind the short backsplash. If not, simply add a new backsplash that matches the new countertop.

The less stored in a cabin, the better to keep mice away and dust to a minimum.

Aznort, I shopped at PlumbingSupply for matching Kohler seats for 3 1955 elongated toilets. If you do go the route of trying a green match, please pre-order the color chips when making your purchase decision. The colors I was 'certain' would work from my monitor were NOT the colors I chose from the chips....and the matches are perfect.

PlumbingSupply

I’d use a lot of white to keep the space as bright as possible. A mostly white shower curtain with a bit of your green color is all you need to tie in the color. Green and white is timeless and looks very fresh.

I wondering, what color and design of tile to match green? White background with grass or leaves or birds patterns? And repainting should be by green color?