'The Violet Hour' BY HEDY WEISS
Richard Greenberg's luminous, mysterious, emotionally churning tragicomedy, "The Violet Hour," is a wondrous piece of work--better experienced than explained even if it is not all that difficult to unspool its essential themes.<br /> <font size="1" face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" color=#9c0031">At Steppenwolf.</font><br />