weserplaner/app/src/main/res/values-night/themes.xml

<resources xmlns:tools="http://schemas.android.com/tools">
    <!-- Base application theme. -->
    <style name="Base.Theme.StudIPTimetable" parent="Theme.Material3.DayNight.NoActionBar">

        <item name="android:textColor">?attr/colorText</item>
        <item name="android:windowBackground">@color/colorBackgroundNight</item>

        <!-- colour -->
        <item name="colorPrimary">@color/primaryNight</item>
        <item name="rippleColor">@color/primaryNight</item>

        <item name="colorNavHighlight">@color/highlightNight</item>
<!--        <item name="colorPrimaryOnContrast">@color/colorPrimaryOnContrastDark</item>-->

        <item name="colorText">@color/colorTextNight</item>
        <item name="colorTextHint">@color/colorTextHintNight</item>

        <item name="colorBackground">@color/colorBackgroundNight</item>
    </style>

    <style name="NavigationViewItemIndicator" parent="Widget.Material3.BottomNavigationView.ActiveIndicator">
        <item name="android:color">@color/primaryNight</item>
    </style>

    <style name="SelectableItemTheme">
        <!--        <item name="colorControlHighlight">?attr/colorPrimary</item>-->
        <item name="colorControlHighlight">@color/primaryNight</item>
    </style>
</resources>