Colorado Ballet is building a new home. But it’s looking for much more than a place to stage what it already does. “The ballet plans to use this new theater for experimental, small-scale works that might be financially risky in larger, costlier venues. It hopes to expand its lineup from five productions in 2005-06 to as many seven in future seasons. At the same time, the ballet will make the facility available to other arts groups at minimal cost.”