XML parsing error: unwanted element after document element; the markup in the document following the root element must be well formed

Try this way, hope it helps you solve your problem.

The problem is you are forgetting the xmls schema in the first line of the style.

<resources xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- the theme applied to the application or activity -->
    <style name="CustomActionBarTheme"
        parent="@style/Theme.Holo">
        <item name="android:actionBarStyle">@style/MyActionBar</item>
        <item name="android:actionBarTabTextStyle">@style/MyActionBarTabText</item>
        <item name="android:actionMenuTextColor">@color/actionbar_text</item>
    </style>

    <!-- ActionBar title text -->
    <style name="MyActionBarTitleText"
        parent="@style/TextAppearane.Holo.Widget.ActionBar.Title">
        <item name="android:textColor">@color/actionbar_text</item>
    </style>

    <!-- ActionBar tabs text styles -->
    <style name="MyActionBarTabText"
        parent="@style/Widget.Holo.ActionBar.TabText">
        <item name="android:textColor">@color/actionbar_text</item>
    </style>
</resources>