Flutter Themes

theme.dart

import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData.dark().copyWith(scaffoldBackgroundColor: darkBlue),
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: MyWidget(),
        ),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    var textTheme = Typography.whiteCupertino.merge(Typography.englishLike2018);
    var bold = TextStyle(fontWeight: FontWeight.w700);
    var italic = TextStyle(fontStyle: FontStyle.italic);
    var xxl = TextStyle(fontSize: 96);

    return Column(children: [
      Text('Display 4', style: textTheme.headline1),
      Text('Headline', style: textTheme.headline5),
      Text('Body', style: textTheme.bodyText2),
      Text('Bold', style: textTheme.bodyText2.merge(bold)),
      Text('Italic', style: textTheme.bodyText2.merge(italic)),
      Text('Italic bold', style: textTheme.bodyText2.merge(bold).merge(italic)),
      Text('XXL', style: textTheme.bodyText2.merge(xxl)),
    ]);
  }
}