public void transform(QuickTiGame2dTransform _transform) {
    try {
      transform = _transform;

      // save initial state
      transform.setStart_red(color[0]);
      transform.setStart_green(color[1]);
      transform.setStart_blue(color[2]);
      transform.setStart_alpha(color[3]);

      transform.start();

    } catch (Exception e) {
      Log.e(Quicktigame2dModule.LOG_TAG, "Error at scene.transform", e);
    }
  }