color: Theme.of(context).primaryColor

Boa noite,

Mesmo realizando extração da class dashboard conforme orientado na aula a cor do Container segue carregando a default do flutter em azul, segue o código

class ByteBankApp extends StatelessWidget {
  const ByteBankApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        colorScheme: ColorScheme.fromSwatch().copyWith(
          primary: Colors.green[900],
          secondary: Colors.orangeAccent,
        ),
        buttonTheme: ButtonThemeData(
          buttonColor: Colors.blue[700],
          textTheme: ButtonTextTheme.primary,
        ),
      ),
      home: Dashboard(),
    );
  }
}

class Dashboard extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Dashboard'),
      ),
      body: Column(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: Image.asset('images/bytebank_logo.png'),
          ),
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: Container(
              padding: EdgeInsets.all(8.0),
              height: 100,
              width: 150,
              color: Theme.of(context).primaryColor,
              //Buscando a cor pelo tema
              child: Column(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                crossAxisAlignment: CrossAxisAlignment.start,
                children: <Widget>[
                  Icon(
                    Icons.people,
                    color: Colors.white,
                    size: 24.0,
                  ),
                  Text(
                    'Contacts',
                    style: TextStyle(
                      color: Colors.white,
                      fontSize: 16.0,
                    ),
           ...
  }
}

Alguém consegue me ajudar como ajustar para que, no código abaixo seja carregado o theme na cor green

     child: Container(
              padding: EdgeInsets.all(8.0),
              height: 100,
              width: 150,
              color: Theme.of(context).primaryColor,