SchildiChat-android/vector/src/main/res/values-v21/theme_common.xml

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

    <style name="AppTheme.Launcher.v21" parent="AppTheme.Launcher.Base">
        <item name="android:statusBarColor">@color/riotx_accent</item>
        <item name="android:navigationBarColor">@color/riotx_accent</item>
    </style>

    <style name="AppTheme.Launcher" parent="AppTheme.Launcher.v21"/>

    <style name="AppTheme.AttachmentsPreview" parent="AppTheme.Base.Black">
        <item name="android:statusBarColor">@android:color/transparent</item>
        <item name="android:navigationBarColor">@android:color/transparent</item>
    </style>

</resources>