TabbedPage background on Android with AppCompat

Hello everyone,

i am trying to use Xamarin.Android.Support.v7.AppCompat in my new aplication and i saw many tutorials how to use this and i got it:

values/style.xml

<?xml version="1.0" encoding="UTF-8" ?>
<resources xmlns:tools="http://schemas.android.com/tools" xmlns:android="http://schemas.android.com/apk/res/android">

  <style name="MyTheme.Base" parent="@android:style/Theme.Holo.Light.DarkActionBar">
  </style>

  <style name="MyTheme" parent="MyTheme.Base">
    <item name="android:windowBackground">@android:color/white</item>
    <item name="android:actionBarStyle">@style/MyTheme.ActionBarStyle</item>
  </style>

  <style name="MyTheme.ActionBarStyle" parent="@android:style/Widget.Holo.Light.ActionBar">
    <item name="android:titleTextStyle">@style/MyTheme.ActionBar.TitleTextStyle</item>
    <item name="android:background">@color/primary</item>
  </style>

    <style name="MyTheme.ActionBar.TitleTextStyle" parent="@android:style/TextAppearance.Holo.Widget.ActionBar.Title">
      <item name="android:textColor">@android:color/white</item>
    </style>

  <style name="MyActionBarTabText" parent="@android:style/Widget.Holo.ActionBar.TabText">
    <item name="android:textColor">#FFFFFF</item>
  </style>

</resources>

values-v21/style.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <!--
        Base application theme for API 21+. This theme replaces
        MyTheme from resources/values/styles.xml on API 21+ devices.
    -->
  <style name="MyTheme" parent="MyTheme.Base">
    <item name="android:windowContentTransitions">true</item>
    <item name="android:windowAllowEnterTransitionOverlap">true</item>
    <item name="android:windowAllowReturnTransitionOverlap">true</item>
    <item name="android:windowSharedElementEnterTransition">@android:transition/move</item>
    <item name="android:windowSharedElementExitTransition">@android:transition/move</item>
    <!--<item name="android:actionBarStyle">@style/MyTheme.ActionBarStyle</item>-->
  </style>
</resources>

i want make my action bar (navigation bar) and my tabbar (TabbedPage ) the same color, like many Material design apps like WhatsApp like this:

but everything that i tried did not work.... my action bar gets the color but my tabbed not...
i want the tab with the same color as my actionbar and the line blue that it have i want to put the color white...

this is my actual screen with the theme applied

thank you all