Embrace the MCM. It’s pretty awesome as is. Kitchen included.

Select a medium tone wood floor and paint the walls a neutral white for starters. Add the colors you like in art and accents

Here are examples of how great blue can look in a home if you confine it to the accents & art.

Do a Houzz search for "open midecentury modern living dining kitchen" and lots of ideas will come up. Here are some looks. Yes, start with a great white that harmonizes with wood. You can do an accent wall to get an MCM color in or just through accents.

Love Beverly’s suggestions!!!