2020-05-21-multicolor-tweening-in-flutter_build_method.dart

  Widget build(BuildContext context) {
    return AnimatedBuilder(
        animation: _controller,
        builder: (context, child) {
          return Container(
            padding: EdgeInsets.all(24.0),
            decoration: BoxDecoration(color: _colorAnim.value),
            child: Text('Tween Sequence'),
          );
        });
  }