anchor.diff:    static const _PIXEL_SIZE = 10; // Default pixel width and height in px.
     static const _INIT_TIME = 1000; // Init time for displaying name in ms.
     static const _STEP_TIME = 100; // Time between two steps in ms.
  +  static const _COLOR = "red";
  +  static const _RADIUS = 5;
     static final List _messages = [new Message("Name can not be empty!", "red"), new Message("Age must be a whole number!", "red")];
   
     // Bind variables
  -  @published String name = "";
  -  @published String age = ""; // TODO: Find out better way to input directly integer or validate more effectively.
  +  @published String name = "Test Name";
  +  @published String age = "1000"; // TODO: Find out better way to input directly integer or validate more effectively.
     @published int fontSize = _FONT_SIZE;
     @published int pixelWidth = _PIXEL_SIZE;
     @published int pixelHeight = _PIXEL_SIZE;
  
positive.code:     _context.canvas.height = window.innerHeight;
    }
  
    void _render(Set<Cell> points) {
      _clearCanvas();
      points.forEach((Cell point) => _context.fillRect(point.x * pixelWidth, point.y * pixelHeight, pixelWidth, pixelHeight));
    }
  
    /// Called when main-app has been fully prepared (Shadow DOM created,
  
negative.code:   // TODO: Implement also method previous.
    void next() {
      _board = step(_board);
      _render(_board, circle:true);
  
      _counter--;
      aging = (int.parse(age) - _counter).toString();
  