main.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: Column(
          children: [
            Listener(
              onPointerEnter: (details) => print("entering red $details"),
              child: Container(
                color: Colors.red,
                width: 200,
                height: 200,
              ),
            ),
            SizedBox(height: 24),
            Listener(
              onPointerEnter: (details) => print("entering blue $details"),
              child: Container(
                color: Colors.blue,
                width: 200,
                height: 200,
              ),
            ),
          ],
        ),
      ),
    );
  }
}