I think you should go look and see what inspires you! It's yours if you want calm fine, if you want go wild, do it and enjoy it. I personally have almost different color walls in every room of my house. Getting ready to paint in my scrap booking / mid-arm quilting room. My other sewing / craft room has 2 walls that are lavender and 2 walls are a kinds a tan/creamy looking color with a hint of yellow. I have to say my DH made shelves for the beige/tan/ beige wall to put my collection of toy sewing machines and they look great against that wall as a back drop!....
Just remember it's yours go with what YOU want and have fun!....
Good Luck and Happy Painting,
Penny aka Country1
P.S. Sounds like your DH is a keeper too! Mine says "When and what do you want?"