anchor.diff:  )
   class dColorPickerComponent implements OnDestroy, AfterContentInit
   {
  -  dColorPickerComponent(this._formBuilder);
  +  dColorPickerComponent(this._formBuilder) : instanceNo = _instanceCounter
  +  {
  +      _instanceCounter++;
  +  }
   
     void ngAfterContentInit()
     {
  
positive.code:     _color  = value;
    }
  
    String _color = "#FFFFFF";
    final StreamController<String> _valueStreamController = new StreamController.broadcast();
    final FormBuilder _formBuilder;
    ControlGroup form;
  
negative.code: 
    @Output('valueChange')
    Stream<String> get colorOutput => _valueStreamController.stream;
    
    final int instanceNo;
    static int _instanceCounter = 0;
  }
  
  Map<String, String> cssColor(AbstractControl control)
  