diff --git a/Test b/Test
index dc36890..12e496a 100644
--- a/Test
+++ b/Test
@@ -1,34 +1,48 @@
 void main() {
-  print('Hello, World!');
+  runApp(MyApp());
 }
 
-
-int factorial(int n) {
-  if (n == 0 || n == 1) {
-    return 1;
-  } else {
-    return n * factorial(n - 1);
+class MyApp extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      home: Scaffold(
+        appBar: AppBar(
+          title: Text('Color Changer'),
+        ),
+        body: ColorChanger(),
+      ),
+    );
   }
 }
 
-void main() {
-  int number = 5;
-  int result = factorial(number);
-  print('The factorial of $number is $result.');
+class ColorChanger extends StatefulWidget {
+  @override
+  _ColorChangerState createState() => _ColorChangerState();
 }
 
-int findMax(List<int> numbers) {
-  int max = numbers[0];
-  for (int i = 1; i < numbers.length; i++) {
-    if (numbers[i] > max) {
-      max = numbers[i];
-    }
+class _ColorChangerState extends State<ColorChanger> {
+  Color _backgroundColor = Colors.white;
+
+  void changeBackgroundColor() {
+    setState(() {
+      _backgroundColor = Color(Random().nextInt(0xFFFFFFFF));
+    });
   }
-  return max;
-}
 
-void main() {
-  List<int> numbers = [12, 56, 3, 78, 42, 9];
-  int maxNumber = findMax(numbers);
-  print('The maximum number in the list is $maxNumber.');
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: () => changeBackgroundColor(),
+      child: Container(
+        color: _backgroundColor,
+        child: Center(
+          child: Text(
+            'Tap to Change Color',
+            style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
+          ),
+        ),
+      ),
+    );
+  }
 }
\ No newline at end of file