add: this.setBackgroundColor( null ); this.setColor( null ); 
context: qx.Proto.setSelected = function( selected ) {  this._selected = selected;  if( selected ) {    this.addState( "checked" );  } else {    this.removeState( "checked" );  }  this._updateCloseButton();}
meta: 8114	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/8114/afb4286406616604d4923ac083a631e6f9ecf66b/CTabItem.js/buggy/bundles/org.eclipse.rap.rwt/js/org/eclipse/rap/rwt/custom/CTabItem.js