res/values-night/styles.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
     SPDX-FileCopyrightText: 2023 The LineageOS Project
     SPDX-License-Identifier: Apache-2.0
-->
<resources>
    <style name="Theme.DeskClock.DigitalWidgetConfigurationTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
        <item name="appWidgetConfigBackground">#191C1C</item>
        <item name="appWidgetConfigTitle">@android:color/system_neutral1_200</item>
        <item name="appWidgetConfigSubtitle">@android:color/system_neutral2_200</item>
        <item name="appWidgetConfigBorder">@android:color/system_neutral2_700</item>
        <item name="appWidgetThemeTransparent">@style/Theme.DeskClock.DigitalWidgetTransparentDarkBg</item>
        <item name="appWidgetThemeSolid">@style/Theme.DeskClock.DigitalWidgetDarkBg</item>
    </style>
</resources>