drawer-app-style.xml

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
    <item name="drawerArrowStyle">@style/MaterialDrawer.DrawerArrowStyle</item>
</style>
<!--use item name="drawerArrowStyle" if you are using dark primaryColor in your app, else remove it-->
<style name="MaterialDrawer.DrawerArrowStyle" parent="Widget.AppCompat.DrawerArrowToggle">
    <item name="spinBars">false</item>
    <item name="color">@android:color/white</item>
</style>