如何更改工具栏选项背景的颜色

我想更改工具栏中选项的浅色背景以及尝试复制内容时出现的部分。现在真的很糟糕：

这是我的styles.xml：

<?xml version="1.0" encoding="utf-8" ?>
<resources>
  <style name="MyTheme.Base" parent="Theme.AppCompat.Light.NoActionBar">
    !-- All customizations that are NOT specific to a particular API-level can go here. -->
    <item name="windowNoTitle">true</item>
    <item name="colorPrimary">@color/primary</item>
    <item name="colorPrimaryDark">@color/primary_dark</item>
    <item name="colorAccent">@color/accent</item>
     <item name="android:textColorPrimary">@color/primary_text</item>
     <item name="android:textColorSecondary">@color/secondary_text</item>

  </style>

  <!-- Application theme. -->
  <style name="MyTheme" parent="MyTheme.Base">
  </style>

  <style name="MyTheme.ToolBar" parent="MyTheme.Base">
    <item name="android:textColorPrimary">@android:color/white</item>
    <item name="android:textColorSecondary">@android:color/white</item>
  </style>

  <style name="MyTheme.NavMenu" parent="MyTheme.Base">
    <item name="android:textColorPrimary">@color/gray</item>
  </style>

  <style name="MyTheme.RightMenu" parent="MyTheme.Base">
    <item name="android:textColorPrimary">@color/black</item>
  </style>
</resources>

您可能已经注意到我正在使用，NoActionBar因为我正在使用工具栏。在我的main.xml上：

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/drawer"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">
<!-- your content layout -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
    <!-- Toolbar instead of ActionBar so the drawer can slide on top -->
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            app:theme="@style/MyTheme.ToolBar"
            android:layout_width="match_parent"
            android:layout_height="@dimen/abc_action_bar_default_height_material"
            android:background="?attr/colorPrimary"
            android:minHeight="?attr/actionBarSize" />
    <!-- Real content goes here -->
        <FrameLayout
            android:id="@+id/content_frame"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1" />
    </LinearLayout>
    <android.support.design.widget.NavigationView
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:id="@+id/nav_view"
        app:headerLayout="@layout/nav_view_header"
        app:menu="@layout/nav_view_menu"
        app:theme="@style/MyTheme.NavMenu" />
</android.support.v4.widget.DrawerLayout>