styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="FullscreenTheme" parent="android:Theme.Holo">
        <item name="android:actionBarStyle">@style/FullscreenActionBarStyle</item>
        <item name="android:windowActionBarOverlay">true</item>
        <item name="android:windowBackground">@null</item>
        <item name="metaButtonBarStyle">?android:attr/buttonBarStyle</item>
        <item name="metaButtonBarButtonStyle">?android:attr/buttonBarButtonStyle</item>
    </style>

    <style name="FullscreenActionBarStyle" parent="android:Widget.Holo.ActionBar">
        <item name="android:background">@color/black_overlay</item>
    </style>

    <style name="DialogTheme" parent="Theme.AppCompat.Light.Dialog.Alert">
        <item name="windowNoTitle">true</item>
        <item name="bottomSheetDialogTheme">@style/Theme.Design.Light.BottomSheetDialog</item>
    </style>

    <style name="DialogTheme.Dark" parent="Theme.AppCompat.Dialog.Alert">
        <item name="windowNoTitle">true</item>
        <item name="bottomSheetDialogTheme">@style/Theme.Design.BottomSheetDialog</item>
    </style>

    <style name="TransparentTheme" parent="@style/Theme.AppCompat.Light">
        <item name="android:background">@android:color/transparent</item>
        <item name="background">@android:color/transparent</item>

        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:colorBackgroundCacheHint">@android:color/transparent</item>
        <item name="android:windowContentOverlay">@android:color/transparent</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowAnimationStyle">@android:color/transparent</item>
    </style>

    <style name="ButtonBar">
        <item name="android:paddingLeft">2dp</item>
        <item name="android:paddingTop">5dp</item>
        <item name="android:paddingRight">2dp</item>
        <item name="android:paddingBottom">0dp</item>
        <item name="android:background">@android:drawable/bottom_bar</item>
    </style>

    <style name="ButtonBarButton" />
</resources>