K.F.
Below is a link to a book I love. Got it at the library but now that I see it on amazon I'm going to buy it. What I liked about this book is it was very sophisticated. It showed unusual combinations of natural with modern and retro and blended the styles in such a cool way.
We have a mid century modern/retro house with lots of natural elements like wood and stone, the color palate is grey/ warm ivory and taupe. I love using natural elements indoors but not in a country type way. We bring nature inside by using stones, succulents and even greenery from the backyard as accents. For paint just look to nature.
Another great resource for this type of decorating is Sunset magazine. I love just about any house they feature, usually the look is fresh and modern without being cold. Have fun!
http://www.amazon.com/Natural-Home-Stylish-Living-Inspire...