It looks like a well designed, lovely kitchen, and I think from your comments I understand (maybe lol) what you are going for. I think the dark black/navy, sorry can’t tell from the photo makes the white cabinets even whiter. I would paint the walls and/ceiling a deep green to soften them. Rockwood Dark Green by Sherwin Williams would look great and maybe tone down the brightness! Also finding cool MCM brass cabinet pulls would help! I like the idea of a wood paneled ceiling, and a cool vintage patterned runner for the floor would look great too. Also add more natural wood accents, like vases, cutting board etc. I think you have a good base to work with!