How To Change Hint Text Color Using Flutter App

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Demo',
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);


  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String dropdownValue= 'A';
  @override
  Widget build(BuildContext context) {
    var currentSelectedValue;
    const deviceTypes = ["Mac", "Windows", "Mobile"];
    return Scaffold(
      appBar: AppBar(
        centerTitle: true,
        backgroundColor: Colors.cyan,
        title: Text('Change Hint Text Color'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(15.0),
        child:  Center(
          child:  TextField(
            style: TextStyle(fontSize: 20),
            decoration: InputDecoration(
              hintText: "Password",
              hintStyle: TextStyle(fontSize: 20.0, color: Colors.cyan),
              border: OutlineInputBorder(
                borderSide: BorderSide(
                  color: Colors.pink,
                ),
              ),
              prefixIcon: const Icon(
                Icons.security,
                color: Colors.cyan,
              ),
            ),
          ),
        ),
      ),
    );
  }
}