With your floor pattern and Cristallo countertops, I would keep the walls a light neutral so as to let the other patterns shine. Check out Benjamin Moore's Affinity collection for some beautiful color choices. The Benjamin Moore Aura paint is their most moisture-resistant for interiors and suited to kitchen environments.

You need some warm accents. Right now it is a very “chilly” scheme. Your whites are different…floor is a stark white, your upper cabs are creamier and you're adding another white for the counter. I’d start with a backsplash, blending all the tones, going as warm as possible.

For the walls, give a thought to red…specifically B.M. Burnt Russet…a delicious warm red.

I’m open to some sort of warm neutral,

Would prefer a warm neutral.. as the cabinets are offwhite... and I prefer not to bring out “yellow tones@, by using cool..
How about this?

Update:
We decided to go with a grige: graceful grey, by Behr.

*ignore the light switch.. it was not screwed in yet..

*greige