vpiTabPageIndicatorStyle

    <style name="AppTheme" parent="@android:style/Theme.Holo.Light.DarkActionBar">
        <item name="vpiTabPageIndicatorStyle">@style/CustomTabPageIndicator</item>
    </style>

    <style name="CustomTabPageIndicator">
        <item name="android:textAppearance">@android:style/TextAppearance</item>
        <item name="android:textSize">14.0sp</item>
        <item name="android:textColor">#ff000000</item>
        <item name="android:gravity">center</item>
        <item name="android:background">@drawable/daychooser_item</item>
        <item name="android:width">45.0dip</item>
        <item name="android:height">60.0dip</item>
        <item name="android:maxLines">1</item>
    </style>

    <style name="CustomTabPageIndicator.Text" parent="android:TextAppearance.Medium">
        <item name="android:textSize">18.0sp</item>
        <item name="android:gravity">center</item>
        <item name="android:layout_width">wrap_content</item>
        <item name="android:layout_height">wrap_content</item>
    </style>