anchor.diff:                  children: <Widget>[
                     new FlatButton(
                       child: new Text('SHARE'),
  +                    textColor: Colors.amber.shade500,
                       onPressed: () { /* do nothing */ },
                     ),
                     new FlatButton(
                       child: new Text('EXPLORE'),
  +                    textColor: Colors.amber.shade500,
                       onPressed: () { /* do nothing */ },
                     ),
                   ],
  
positive.code:     final TextStyle titleStyle = theme.textTheme.headline.copyWith(color: Colors.white);
      final TextStyle descriptionStyle = theme.textTheme.subhead;
  
      return new SizedBox(
        height: height,
        child: new Card(
          child: new Column(
  
negative.code:     assert(destination != null && destination.isValid);
    }
  
    static final double height = 366.0;
    final TravelDestination destination;
  
    @override
  