AndroidAPS/app/src/main/res/values/styles.xml

<resources>

    <!-- The launcher theme. It sets the main window background to the launch_screen drawable -->
    <style name="AppTheme.Launcher"  parent="Theme.AppCompat.NoActionBar">
        <item name="android:windowBackground">@drawable/launch_screen</item>
        <!-- Optional, on Android 5+ you can modify the colorPrimaryDark color to match the windowBackground color for further branding-->
        <!-- <item name="colorPrimaryDark">@android:color/white</item> -->
    </style>

    <style name="AppTheme" parent="Theme.AppCompat">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="AppTheme.NoActionBar" parent="Theme.AppCompat.NoActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="Theme.AppCompat.Translucent" parent="Theme.AppCompat.NoActionBar">
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:colorBackgroundCacheHint">@null</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowAnimationStyle">@android:style/Animation</item>
    </style>

    <style name="InsightAlertDialog" parent="Theme.AppCompat.Dialog">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
        <item name="android:windowMinWidthMajor">96%</item>
        <item name="android:windowMinWidthMinor">96%</item>
    </style>

    <style name="Theme.AppCompat.NoTitle" parent="Theme.AppCompat.NoActionBar">
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:colorBackgroundCacheHint">@null</item>
        <item name="android:windowIsTranslucent">false</item>
        <item name="android:windowAnimationStyle">@android:style/Animation</item>
    </style>

    <style name="ButtonSmallFontStyle">
        <item name="android:textSize">10sp</item>
    </style>

    <style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />

</resources>