Fix dark dialog background (#392)

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