diff --git a/app/src/main/java/apps/amine/bou/readerforselfoss/ReaderActivity.kt b/app/src/main/java/apps/amine/bou/readerforselfoss/ReaderActivity.kt
index f3c0cf1..6982409 100644
--- a/app/src/main/java/apps/amine/bou/readerforselfoss/ReaderActivity.kt
+++ b/app/src/main/java/apps/amine/bou/readerforselfoss/ReaderActivity.kt
@@ -21,6 +21,7 @@ import apps.amine.bou.readerforselfoss.persistence.database.AppDatabase
 import apps.amine.bou.readerforselfoss.persistence.migrations.MIGRATION_1_2
 import apps.amine.bou.readerforselfoss.persistence.migrations.MIGRATION_2_3
 import apps.amine.bou.readerforselfoss.persistence.migrations.MIGRATION_3_4
+import apps.amine.bou.readerforselfoss.themes.AppColors
 import apps.amine.bou.readerforselfoss.themes.Toppings
 import apps.amine.bou.readerforselfoss.utils.Config
 import apps.amine.bou.readerforselfoss.utils.SharedItems
@@ -32,6 +33,7 @@ class ReaderActivity : AppCompatActivity() {
     private var markOnScroll: Boolean = false
     private var currentItem: Int = 0
     private lateinit var userIdentifier: String
+    private lateinit var appColors: AppColors
 
     private lateinit var api: SelfossApi
 
@@ -65,6 +67,7 @@ class ReaderActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        appColors = AppColors(this)
         binding = ActivityReaderBinding.inflate(layoutInflater)
         val view = binding.root
 
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index fdf7efb..e81acf0 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -28,6 +28,7 @@
         <item name="cardBackgroundColor">@color/grey_800</item>
         <item name="android:colorBackground">@color/darkBackground</item>
         <item name="colorSurface">@color/darkBackground</item>
+        <item name="alertDialogTheme">@style/AlertDialogDark</item>
         <item name="bnbBackgroundColor">@color/grey_900</item>
         <item name="android:textColorPrimary">@color/white</item>
         <item name="android:textColorSecondary">@color/grey_600</item>
@@ -63,4 +64,10 @@
         <item name="android:textColor">?android:textColorPrimary</item>
     </style>
 
+    <!-- Alert dialog Theme -->
+
+    <style name="AlertDialogDark" parent="Theme.MaterialComponents.Dialog">
+        <item name="android:background">@color/darkBackground</item>
+    </style>
+
 </resources>