Flutter Theme Basic

• Default Themes
• Global Themes
• Adapting Themes
• Dynamic Themes

Using Themes

floatingActionButton: FloatingActionButton(
  onPressed: _incrementCounter,
  tooltip: 'Increment',
  backgroundColor: Theme.of(context).accentColor,
  child: Icon(Icons.add),
),

Deafult Theme Light
MaterialApp( title: 'Flutter Demo', theme: ThemeData.light(), home: MyHomePage(title: 'Flutter Demo Home Page'), );

Deafult Theme Dark
MaterialApp( title: 'Flutter Demo', theme: ThemeData.dark(), home: MyHomePage(title: 'Flutter Demo Home Page'), );

Global Themes
MaterialApp( title: 'Flutter Demo', theme: ThemeData( primaryColor: Colors.purple[800], accentColor: Colors.amber, accentColorBrightness: Brightness.dark ), home: MyHomePage(title: 'Flutter Demo Home Page'), );

Adapting Themes
MaterialApp( title: 'Flutter Demo', theme: ThemeData.dark().copyWith( primaryColor: Colors.purple[800], accentColor: Colors.amber, ), home: MyHomePage(title: 'Flutter Demo Home Page'), );