Blue stove looks great, I think brass hardware would help with adding that color you're after.

Very well done!

Looks Fabulous!

I like adding color with accessories because they're easy to change. What about a crock for utensils in a bright color? Or towels? You can also do a vase with sunflowers.

Blue stove? It looks like the film hasn't been removed from the stainless yet.

You could add color with a rug, towels, bowl of fruit, real plant and/or flowers, art propped against backsplash, tray holding any of the above, tray maybe near stove holding utensils, oils, etc. I would also add relating color in the dining area with art and a rug. It might be easier to start with the larger pieces or find something as your inspiration starting point to branch off from.

Pretty kitchen.

I've noticed that rose gold or brass utensils are fantastic for adding a pop of color to a mostly white kitchen. Beautiful kitchen!