How To Change Tabbar Indicator Color In Flutter App

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
        home: Scaffold(
            body:ChangeTextColor(),
        ),
    );
  }
}

class ChangeTextColor extends StatefulWidget {
  @override
  ChangeTextColorState createState() {
    return new ChangeTextColorState();
  }
}

class ChangeTextColorState extends State<ChangeTextColor> {


  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: DefaultTabController(
          length: 3,
          child: Scaffold(
             backgroundColor: Colors.black,
            appBar: AppBar(

              flexibleSpace: Container(
                color: Colors.pink,
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  mainAxisAlignment: MainAxisAlignment.end,
                  children: <Widget>[
                    TabBar(
                      indicatorSize: TabBarIndicatorSize.tab,
                        indicatorWeight: 5,
                        indicatorColor: Colors.white,
                        labelColor: Colors.red,
                        unselectedLabelColor: Colors.green,

                        tabs: [
                          Tab(
                            child: Text(
                              "Tab 1",
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                          Tab(
                            child: Text(
                              "Tab 2",
                              style: TextStyle(color: Colors.white),
                            ),
                          ),
                          Tab(
                            child: Text(
                              "Tab 3",
                              style: TextStyle(color: Colors.white),
                            ),
                          )
                        ])
                  ],
                ),
              ),
            ),

            body: TabBarView(children: [
              Container(
                child: Center(
                  child: Text("tab 1",style: TextStyle(color: Colors.white)),
                ),
              ),
              Container(
                child: Center(
                  child: Text("tab 2",style: TextStyle(color: Colors.white)),
                ),
              ),
              Container(
                child: Center(
                  child: Text("tab 3",style: TextStyle(color: Colors.white)),
                ),
              )
            ]),
          )),
    );
  }
}