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

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:tools="http://schemas.android.com/tools">

    <style name="Theme.Tachiyomi" parent="Theme.Base">
        <item name="android:windowLightStatusBar">false</item>
        <item name="android:windowLightNavigationBar" tools:targetApi="27">false</item>
    </style>

    <!--==============-->
    <!-- Amoled Theme -->
    <!--==============-->
    <style name="Theme.Tachiyomi.Amoled" parent="Theme.Tachiyomi">
        <item name="colorPrimary">@color/colorAmoledPrimary</item>
        <item name="colorSecondary">@color/colorAmoledPrimary</item>
        <item name="colorPrimaryVariant">@color/colorAmoledPrimary</item>
        <item name="colorOnPrimary">@color/colorAmoledPrimary</item>
        <item name="colorPrimaryDark">@color/colorAmoledPrimary</item>
        <item name="android:colorBackground">@color/md_black_1000</item>

        <!-- Material Dialog colors -->
        <item name="md_color_title">@color/textColorPrimary</item>
        <item name="md_color_content">@color/text_color_secondary</item>
        <item name="md_color_button_text">@color/colorAccent</item>
        <item name="md_background_color">@color/colorAmoledPrimary</item>
        <item name="md_corner_radius">16dp</item>
    </style>
</resources>