anchor.diff:      const SwatchPage('Colors.redAccent', Colors.redAccent, accentPalette),
       const SwatchPage('Colors.pinkAccent', Colors.pinkAccent, accentPalette),
       const SwatchPage('Colors.purpleAccent', Colors.purpleAccent, accentPalette),
  -    const SwatchPage(
  -        'Colors.deepPurpleAccent', Colors.deepPurpleAccent, accentPalette),
  +    const SwatchPage('Colors.deepPurpleAccent', Colors.deepPurpleAccent, accentPalette),
       const SwatchPage('Colors.indigoAccent', Colors.indigoAccent, accentPalette),
       const SwatchPage('Colors.blueAccent', Colors.blueAccent, accentPalette),
  -    const SwatchPage(
  -        'Colors.lightBlueAccent', Colors.lightBlueAccent, accentPalette),
  +    const SwatchPage('Colors.lightBlueAccent', Colors.lightBlueAccent, accentPalette),
       const SwatchPage('Colors.cyanAccent', Colors.cyanAccent, accentPalette),
       const SwatchPage('Colors.tealAccent', Colors.tealAccent, accentPalette),
       const SwatchPage('Colors.greenAccent', Colors.greenAccent, accentPalette),
  -    const SwatchPage(
  -        'Colors.lightGreenAccent', Colors.lightGreenAccent, accentPalette),
  +    const SwatchPage('Colors.lightGreenAccent', Colors.lightGreenAccent, accentPalette),
       const SwatchPage('Colors.limeAccent', Colors.limeAccent, accentPalette),
       const SwatchPage('Colors.yellowAccent', Colors.yellowAccent, accentPalette),
       const SwatchPage('Colors.amberAccent', Colors.amberAccent, accentPalette),
       const SwatchPage('Colors.orangeAccent', Colors.orangeAccent, accentPalette),
  -    const SwatchPage(
  -        'Colors.deepOrangeAccent', Colors.deepOrangeAccent, accentPalette),
  +    const SwatchPage('Colors.deepOrangeAccent', Colors.deepOrangeAccent, accentPalette),
       const SwatchPage('Colors.grey', Colors.grey, greyPalette),
       const ColorListPage('Colors.blacks', Colors.white, const <String, Color>{
         'black': Colors.black,
  
positive.code:       'white70': Colors.white70,
      }),
    ];
    print('This app will display a sequence of images. For each one, tap "s"');
    print('in the console to take a screenshot, then tap the screen to');
    print('advance. When all is done, a script will be dumped that shows the');
    print('commands to run to convert all the screenshots to images.');
    print('BASH: N=1 # set this to the number of the first screenshot file');
    Map<String, WidgetBuilder> routes = <String, WidgetBuilder>{};
    for (Page page in pages) {
      routes['/' + page.filename] = page.build;
      print('COLOR: ${page.filename}');
    }
    runApp(new MaterialApp(onGenerateRoute: (RouteSettings settings) {
      if (settings.isInitialRoute &&
          settings.name == Navigator.defaultRouteName) {
        return new MaterialPageRoute<Null>(
          builder: (BuildContext context) {
            return new HomePage(pages);
          },
          settings: settings,
        );
      } else {
        return new MaterialPageRoute<Null>(
          builder: routes[settings.name],
          settings: settings,
        );
      }
    }));
  }
  
negative.code:           mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: <Widget>[
              new Text(label, style: style),
              new Text('0x${swatch[key].value.toRadixString(16).toUpperCase()}', style: style),
            ],
          ),
        ));
      }
      return new Container(
        key: key,
        width: 300.0,
        child: new Column(
          mainAxisSize: MainAxisSize.min,
          children: items,
        ),
      );
    }
  }
  
  