Update room_toolbar.xml

rocket-chat-android-widgets/src/main/res/layout/room_toolbar.xml

@@ -4,9 +4,8 @@
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:minHeight="?attr/actionBarSize"
-    app:titleTextColor="@android:color/white"
-    android:background="@color/color_accent">
-
+    app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+    app:popupTheme="@style/ThemeOverlay.AppCompat.Light">
 
     <android.support.constraint.ConstraintLayout
         android:layout_width="match_parent"
@@ -14,8 +13,8 @@
 
         <ImageView
             android:id="@+id/roomIconImageView"
-            android:layout_width="10dp"
-            android:layout_height="10dp"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
             app:layout_constraintLeft_toLeftOf="parent"
             app:layout_constraintTop_toTopOf="parent"
             app:layout_constraintBottom_toBottomOf="parent"