Android更改工具栏颜色和状态栏颜色，但保留状态栏阴影

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- 更改工具栏颜色 -->
    <item name="colorPrimary">#FF0000</item>
    <!-- 更改状态栏颜色 -->
    <item name="colorPrimaryDark">#00FF00</item>
</style>

<application
    android:theme="@style/AppTheme">
    ...
</application>

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
    getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
    getWindow().setStatusBarColor(Color.TRANSPARENT);
    getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
}