CODE EXAMPLE FOR DART

How to change background color of TabBar without changing the AppBar in flutter?

return MaterialApp(
      theme: ThemeData(
        brightness: Brightness.light,
      // add tabBarTheme 
      tabBarTheme: const TabBarTheme(
        labelColor: Colors.pink[800],
        labelStyle: TextStyle(color: Colors.pink[800]), // color for text
        indicator: UnderlineTabIndicator( // color for indicator (underline)
          borderSide: BorderSide(color: ConstColor.primary))),
        primaryColor: Colors.pink[800], // outdated and has no effect to Tabbar
        accentColor: Colors.cyan[600] // deprecated,
      ),
      home: DefaultTabController(
        length: 3,
        child: Scaffold(
          appBar: AppBar(
            bottom: TabBar(
              indicatorColor: Colors.lime,
              tabs: [
                Tab(icon: Icon(Icons.directions_car)),
                Tab(icon: Icon(Icons.directions_transit)),
                Tab(icon: Icon(Icons.directions_bike)),
              ],
            ),
            title: Text('Tabs Demo'),
          ),
          body: TabBarView(
            children: [
              Icon(Icons.directions_car),
              Icon(Icons.directions_transit),
              Icon(Icons.directions_bike),
            ],
          ),
        ),
      ),
    );