Oh, I think they are awesome! So quirky and full of personality. You should be proud of them.
Perhaps the deep burgundy that is in the color of the tile would be delicious as a paint color. Don't get a paint that us too shiny. Or....keep the paint a little more neutral such as a soft gray, and bring in the personality with fantastic large art. The bigger the better in a bathroom is my policy.
Good luck with your choice. Show us after photos please!

Thanks for the suggestions. My first instinct was a deep burgandy but everyone else in the house was fussing about such a dark colour. Decisions, decisions!

Hi, your tiles are really cool! Have fun!

I suggest a beige (the same pinkish beige tones of the tile). That will make the tile the star and then you can accent with the towels in the other colors.

I think lotus pod by sherwin willaims, it would compliment the tiles while keeping the tiles the focus of attention. P.s. I love your tiles!
I recently remodeled the flooring in my house and keep all the 70s quirky tiles in bathrooms. Love them!