new splashes of color

I must admit upfront that I did not paint these myself. The people who originally painted our house were up doing some painting on the A&W. I asked if they would have time to fit in my projects - the stairwell walls and the boys bedroom. It worked out perfectly - they were done in a day and it is a perfect job. The color on the feature wall is mustang, and the boys is valley forage brown. Any decorating tips would be appreciated. I haven't found the perfect thing to hang on my big wall. I've thought of a large clock or two ... or a couple large pictures ... just don't know what would look best.