I often paint a lot of furniture in Old White, French Linen, Paris Gray, and Old Ochre. These are beautiful neutral colors that coordinate with many styles of home decor. I've tried to expand lately and experiment with brighter colors. These peg racks are done in a two color distressed method with some pretty custom mixed shades.
I also practiced mixing colors on some Mason jars. Choose your favorite color and try adding Old White or Pure White until you achieve the color you love!
For some great color inspiration, stop over and visit Leslie Stocker's awesome blog, Colorways.