diff --git a/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/MainActivity.java b/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/MainActivity.java
index a65c2b9..5e4764c 100644
--- a/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/MainActivity.java
+++ b/app/src/main/java/org/secuso/privacyfriendlysudoku/ui/MainActivity.java
@@ -75,11 +75,6 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
             editor.apply();
         }
 
-        // TODO: remove this after testing
-        WelcomeDialog welcomeDialog = new WelcomeDialog();
-        welcomeDialog.show(getFragmentManager(), "WelcomeDialog");
-
-
         // check if we need to pre generate levels.
         newLevelManager.checkAndRestock();
 
diff --git a/app/src/main/res/drawable/ic_star_blue_48dp.png b/app/src/main/res/drawable/ic_star_blue_48dp.png
index 872e2b3..cd0bd03 100644
Binary files a/app/src/main/res/drawable/ic_star_blue_48dp.png and b/app/src/main/res/drawable/ic_star_blue_48dp.png differ
diff --git a/app/src/main/res/drawable/ic_star_grey_48dp.png b/app/src/main/res/drawable/ic_star_grey_48dp.png
index 991abe1..91ea2da 100644
Binary files a/app/src/main/res/drawable/ic_star_grey_48dp.png and b/app/src/main/res/drawable/ic_star_grey_48dp.png differ
diff --git a/app/src/main/res/drawable/ratingbar.xml b/app/src/main/res/drawable/ratingbar.xml
index 3f204ef..b634ced 100644
--- a/app/src/main/res/drawable/ratingbar.xml
+++ b/app/src/main/res/drawable/ratingbar.xml
@@ -17,16 +17,11 @@
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:id="@android:id/background">
         <bitmap
-            android:src="@drawable/ic_star_grey_48dp"/>
-    </item>
-    <item android:id="@android:id/secondaryProgress">
-        <bitmap
-            android:src="@drawable/ic_star_half_black_48dp"
-            android:tint="@color/middlegrey" />
+            android:src="@drawable/ic_star_grey_36dp" />
     </item>
     <item android:id="@android:id/progress">
         <bitmap
-            android:src="@drawable/ic_star_blue_48dp" />
+            android:src="@drawable/ic_star_blue_36dp" />
     </item>
 </layer-list>
 
diff --git a/app/src/main/res/layout/activity_main_menu.xml b/app/src/main/res/layout/activity_main_menu.xml
index 175c70f..c6dcc78 100644
--- a/app/src/main/res/layout/activity_main_menu.xml
+++ b/app/src/main/res/layout/activity_main_menu.xml
@@ -102,7 +102,6 @@
 
             <RatingBar
                 android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
                 android:id="@+id/difficultyBar"
                 android:layout_gravity="center_horizontal"
                 android:clickable="true"
diff --git a/app/src/main/res/values-v21/styles.xml b/app/src/main/res/values-v21/styles.xml
index 65d0c39..782b952 100644
--- a/app/src/main/res/values-v21/styles.xml
+++ b/app/src/main/res/values-v21/styles.xml
@@ -5,4 +5,12 @@
         <item name="android:windowDrawsSystemBarBackgrounds">true</item>
         <item name="android:statusBarColor">@android:color/transparent</item>
     </style>
+
+
+    <style name="RatingBar" parent="RatingBarStyle">
+        <item name="android:minHeight">57dp</item>
+        <item name="android:maxHeight">57dp</item>
+        <item name="android:layout_height">57dp</item>
+    </style>
+
 </resources>
diff --git a/app/src/main/res/values-xlarge/styles.xml b/app/src/main/res/values-xlarge/styles.xml
index 30addb2..4d340b6 100644
--- a/app/src/main/res/values-xlarge/styles.xml
+++ b/app/src/main/res/values-xlarge/styles.xml
@@ -4,6 +4,7 @@
     <style name="RatingBar" parent="RatingBarStyle">
         <item name="android:minHeight">80dip</item>
         <item name="android:maxHeight">80dip</item>
+        <item name="android:layout_height">80dp</item>
     </style>
 
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index ab0d591..47d9de2 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -49,8 +49,9 @@
     </style>
 
     <style name="RatingBar" parent="RatingBarStyle">
-        <item name="android:minHeight">57dip</item>
-        <item name="android:maxHeight">57dip</item>
+        <item name="android:minHeight">50dp</item>
+        <item name="android:maxHeight">50dp</item>
+        <item name="android:layout_height">50dp</item>
     </style>