Background color

import 'package:flutter/material.dart';

var PrimaryColor = Color(0xFF3582FF);

class _HomePageState extends State<HomePage> {
  @override
  Widget build(BuildContext context) {
    return new Scaffold(
        appBar: AppBar(
          title: const Text('Zoeken'),
          backgroundColor: PrimaryColor,
          actions: <Widget>[
            IconButton(
              icon: new Icon(Icons.search),
              onPressed: () {
                print("zoeken");
              },
            ),
          ],
        ),
        backgroundColor: Color.fromARGB(230, 240, 240, 240),
        drawer: new Drawer(
            child: new ListView(
          padding: EdgeInsets.zero,
          children: <Widget>[
            Image(
              image: AssetImage("assets/img/drawer2.png"),
              fit: BoxFit.cover,
            ),
            new ListTile(
              title: new Text("Instellingen"),
              trailing: new Icon(Icons.settings),
              onTap: () {
                Navigator.of(context).pop();
                Navigator.of(context).push(new MaterialPageRoute(
                    builder: (BuildContext context) =>
                        new InstellingenClass()));
              },
            ),
            new Divider(
              thickness: 1.4,
            ),
            new ListTile(
                title: new Text(coupons),
                trailing: new Icon(MdiIcons.sale),
                onTap: () {
                  Navigator.of(context).pop();
                  Navigator.of(context).push(new MaterialPageRoute(
                      builder: (BuildContext context) => new Page(coupons)));
                }),
            new Divider(
              thickness: 1.4,
            ),
            new ListTile(
                title: new Text(activity),
                trailing: new Icon(MdiIcons.calendarMonth),
                onTap: () {
                  Navigator.of(context).pop();
                  Navigator.of(context).push(new MaterialPageRoute(
                      builder: (BuildContext context) => new Page(activity)));
                }),
            new Divider(
              thickness: 1.4,
            ),
            new ListTile(
                title: new Text(contact),
                trailing: new Icon(MdiIcons.email),
                onTap: () {
                  Navigator.of(context).pop();
                  Navigator.of(context).push(new MaterialPageRoute(
                      builder: (BuildContext context) => new Page(contact)));
                }),
            new Divider(
              thickness: 1.4,
            ),
            new ListTile(
                title: new Text(review),
                trailing: new Icon(MdiIcons.star),
                onTap: () {
                  Navigator.of(context).pop();
                  Navigator.of(context).push(new MaterialPageRoute(
                      builder: (BuildContext context) => new Page(review)));
                }),
          ],
        )));
  }
}