diff --git a/res/values/cherish_strings.xml b/res/values/cherish_strings.xml
index 80a777e..4b7e439 100644
--- a/res/values/cherish_strings.xml
+++ b/res/values/cherish_strings.xml
@@ -519,7 +519,7 @@
     <string name="status_bar_battery_percentage_default">Hidden</string>
     <string name="status_bar_battery_percentage_text_next">Next to the icon</string>
     <string name="status_bar_battery_percentage_text_inside">Inside the icon</string>
-	
+
 	<!-- Status bar battery style-->
     <string name="status_bar_battery_style_title">Battery style</string>
     <string name="status_bar_battery_style_port">Portrait</string>
@@ -771,4 +771,7 @@
     <string name="qs_show_auto_brightness_title">Auto brightness icon</string>
     <string name="qs_show_auto_brightness_summary">Show toggle for adaptive brightness near the slider</string>
 	
+	<!-- Black theme -->
+    <string name="system_black_theme_title">Use black theme</string>
+    <string name="system_black_theme_summary">Force black background colors</string>
 </resources>
diff --git a/res/xml/cherish_settings_theme.xml b/res/xml/cherish_settings_theme.xml
index ef43706..dadb163 100644
--- a/res/xml/cherish_settings_theme.xml
+++ b/res/xml/cherish_settings_theme.xml
@@ -30,6 +30,12 @@
             android:summary="%s"
             android:defaultValue="0" />
 
+    <com.cherish.settings.preferences.SecureSettingSwitchPreference
+        android:key="system_black_theme"
+        android:title="@string/system_black_theme_title"
+        android:summary="@string/system_black_theme_summary"
+        android:defaultValue="false" />
+
     </PreferenceCategory>
 	
 	<PreferenceCategory