fix wrong bg color in light mode
diff --git a/app/src/main/res/values-night/colors.xml b/app/src/main/res/values-night/colors.xml
new file mode 100644
index 0000000..05683d3
--- /dev/null
+++ b/app/src/main/res/values-night/colors.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+	<color name="background">@android:color/system_neutral1_900</color>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index d95bf93..ecf4d6c 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -7,4 +7,5 @@
 	<color name="teal_700">#FF018786</color>
 	<color name="black">#FF000000</color>
 	<color name="white">#FFFFFFFF</color>
+	<color name="background">@android:color/system_neutral1_10</color>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 76e93fe..b628026 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -3,7 +3,7 @@
 	<style name="Theme.FaceUnlock" parent="Theme.FaceUnlock.Base" />
 	<style name="Theme.FaceUnlock.Base" parent="@android:style/Theme.DeviceDefault.DayNight">
 		<item name="android:colorPrimaryDark">@android:color/transparent</item> <!-- Status bar color -->
-		<item name="android:colorBackground">@android:color/system_neutral1_900</item>
+		<item name="android:colorBackground">@color/background</item>
 	</style>
 	<style name="Theme.FaceUnlock.NoActionBar" parent="Theme.FaceUnlock.Base">
 		<item name="android:windowActionBar">false</item>