main function

void main()


void main() {
    title: 'Color Plus',
    theme: ThemeData(
      // This is the theme of your application.
      // Try running your application with "flutter run". You'll see the
      // application has a blue toolbar. Then, without quitting the app, try
      // changing the primarySwatch below to and then invoke
      // "hot reload" (press "r" in the console where you ran "flutter run",
      // or simply save your changes to "hot reload" in a Flutter IDE).
      // Notice that the counter didn't reset back to zero; the application
      // is not restarted.
      // This makes the visual density adapt to the platform that you run
      // the app on. For desktop platforms, the controls will be smaller and
      // closer together (more dense) than on mobile platforms.
      visualDensity: VisualDensity.adaptivePlatformDensity,
    home: ColorPlusTester(),