Change color of border & IconData in TextInput

readme.md

Change color of border & IconData in TextInput

Created with <3 with dartpad.dev.

main.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData().copyWith(
        scaffoldBackgroundColor: Colors.white,
        colorScheme: ThemeData().colorScheme.copyWith(primary: Colors.green),
      ),
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: Padding(
            padding: const EdgeInsets.all(24.0),
            child: MyWidget(),
          ),
        ),
      ),
    );
  }
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return const TextField(
      decoration: InputDecoration(
        prefixIcon: Icon(Icons.lock_outline),
        hintText: 'Username',
      ),
    );
  }
}