How to set Auto dynamic color in Flutter App?

Dynamic Color Options in Flutter with respect to time

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
// In this case we are using switch case which validate automatically based on seconds 
  Color getDynamicColor() {
    int lastDigitOfEpoch = DateTime.now().millisecondsSinceEpoch % 10;// output in 0 to 9 based on that color change

// In this we use 0 to 9 cases because mod of any number with 10 lies between (0 to 9)
    switch (lastDigitOfEpoch) {
      case 0:
        return Colors.red;
      case 1:
        return Colors.blue;
      case 2:
        return Colors.green;
      case 3:
        return Colors.orange;
      case 4:
        return Colors.purple;
      case 5:
        return Colors.yellow;
      case 6:
        return Colors.teal;
      case 7:
        return Colors.pink;
      case 8:
        return Colors.indigo;
      case 9:
        return Colors.brown;
      default:
        return Colors.black;
    }
  }

  @override
  Widget build(BuildContext context) {
// here we call methods which give output with respect to  the time 
    final dynamicColor = getDynamicColor();

    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Dynamic Color Example'),
          backgroundColor: dynamicColor, // Here the background color change automatically
        ),
        body: Center(
          child: Container(
            color: dynamicColor, // here container color also change
            child: Text(
              'Hello, Flutter!',
              style: TextStyle(color: Colors.white),
            ),
          ),
        ),
      ),
    );
  }
}

In this, LastDigitOfEpoch is calculated by taking the last digit of the current epoch time, i.e. it checks the seconds and through mod output will be 0 to 9, then the switch statement uses this value and returns the color. Thus, the color will change depending on the last digit of the epoch time.

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