diff --git a/res/values/themes.xml b/res/values/themes.xml
new file mode 100644
index 0000000..c0a695e
--- /dev/null
+++ b/res/values/themes.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Override the default system theme for LIGHT mode -->
+    <style name="Theme.DeviceDefault" parent="@android:style/Theme.DeviceDefault">
+        <item name="colorPrimary">@color/accent_device_default</item>
+        <item name="colorPrimaryDark">@color/accent_emphasis_dark</item>
+        <item name="colorAccent">@color/accent_device_default</item>
+        <item name="android:colorBackground">@android:color/background_light</item>
+        <item name="android:windowBackground">@android:color/background_light</item>
+    </style>
+
+    <!-- Light theme variant -->
+    <style name="Theme.DeviceDefault.Light" parent="@android:style/Theme.DeviceDefault.Light">
+        <item name="colorPrimary">@color/accent_device_light</item>
+        <item name="colorPrimaryDark">@color/accent_emphasis_light</item>
+        <item name="colorAccent">@color/accent_device_light</item>
+    </style>
+
+    <!-- Settings-specific theme for LIGHT mode -->
+    <style name="Theme.DeviceDefault.Settings" parent="@android:style/Theme.DeviceDefault.Settings">
+        <item name="colorPrimary">@color/accent_device_default</item>
+        <item name="colorPrimaryDark">@color/accent_emphasis_dark</item>
+        <item name="colorAccent">@color/accent_device_default</item>
+        <item name="android:actionBarStyle">@style/Widget.DeviceDefault.ActionBar.Settings</item>
+    </style>
+
+    <!-- ActionBar style for Settings -->
+    <style name="Widget.DeviceDefault.ActionBar.Settings" parent="@android:style/Widget.DeviceDefault.ActionBar">
+        <item name="android:background">?attr/colorPrimary</item>
+        <item name="android:titleTextStyle">@style/Widget.DeviceDefault.ActionBar.TitleTextStyle.Settings</item>
+    </style>
+
+    <style name="Widget.DeviceDefault.ActionBar.TitleTextStyle.Settings" parent="@android:style/Widget.DeviceDefault.ActionBar.TitleTextStyle">
+        <item name="android:textColor">@android:color/white</item>
+    </style>
+</resources>
\ No newline at end of file