diff --git a/app/src/main/java/dummydomain/yetanothercallblocker/IconAndColor.java b/app/src/main/java/dummydomain/yetanothercallblocker/IconAndColor.java
index ebfc428..b6a2801 100644
--- a/app/src/main/java/dummydomain/yetanothercallblocker/IconAndColor.java
+++ b/app/src/main/java/dummydomain/yetanothercallblocker/IconAndColor.java
@@ -43,24 +43,24 @@ class IconAndColor {
     static IconAndColor forNumberRating(NumberRating rating) {
         switch (rating) {
             case NEUTRAL:
-                return of(R.drawable.ic_thumbs_up_down_black_24dp, R.color.rateNeutral);
+                return of(R.drawable.ic_thumbs_up_down_24dp, R.color.rateNeutral);
             case POSITIVE:
-                return of(R.drawable.ic_thumb_up_black_24dp, R.color.ratePositive);
+                return of(R.drawable.ic_thumb_up_24dp, R.color.ratePositive);
             case NEGATIVE:
-                return of(R.drawable.ic_thumb_down_black_24dp, R.color.rateNegative);
+                return of(R.drawable.ic_thumb_down_24dp, R.color.rateNegative);
         }
-        return new IconAndColor(R.drawable.ic_thumbs_up_down_black_24dp, R.color.notFound, true);
+        return new IconAndColor(R.drawable.ic_thumbs_up_down_24dp, R.color.notFound, true);
     }
 
     static IconAndColor forNumberRating(NumberInfo.Rating rating) {
         switch (rating) {
             case NEUTRAL:
-                return of(R.drawable.ic_thumbs_up_down_black_24dp, R.color.rateNeutral);
+                return of(R.drawable.ic_thumbs_up_down_24dp, R.color.rateNeutral);
             case POSITIVE:
-                return of(R.drawable.ic_thumb_up_black_24dp, R.color.ratePositive);
+                return of(R.drawable.ic_thumb_up_24dp, R.color.ratePositive);
             case NEGATIVE:
-                return of(R.drawable.ic_thumb_down_black_24dp, R.color.rateNegative);
+                return of(R.drawable.ic_thumb_down_24dp, R.color.rateNegative);
         }
-        return new IconAndColor(R.drawable.ic_thumbs_up_down_black_24dp, R.color.notFound, true);
+        return new IconAndColor(R.drawable.ic_thumbs_up_down_24dp, R.color.notFound, true);
     }
 }
diff --git a/app/src/main/java/dummydomain/yetanothercallblocker/NotificationHelper.java b/app/src/main/java/dummydomain/yetanothercallblocker/NotificationHelper.java
index b99c992..723371b 100644
--- a/app/src/main/java/dummydomain/yetanothercallblocker/NotificationHelper.java
+++ b/app/src/main/java/dummydomain/yetanothercallblocker/NotificationHelper.java
@@ -77,7 +77,7 @@ public class NotificationHelper {
                 context, 0, intent, 0);
 
         return new NotificationCompat.Builder(context, CHANNEL_ID_TASKS)
-                .setSmallIcon(R.drawable.ic_file_download_black_24dp)
+                .setSmallIcon(R.drawable.ic_file_download_24dp)
                 .setContentIntent(contentIntent)
                 .setContentTitle(title).build();
     }
@@ -92,28 +92,28 @@ public class NotificationHelper {
             case POSITIVE:
                 channelId = numberInfo.known ? CHANNEL_ID_POSITIVE_KNOWN : CHANNEL_ID_POSITIVE;
                 title = context.getString(R.string.notification_incoming_call_positive);
-                icon = R.drawable.ic_thumb_up_black_24dp;
+                icon = R.drawable.ic_thumb_up_24dp;
                 color = 0xff00ff00;
                 break;
 
             case NEUTRAL:
                 channelId = CHANNEL_ID_NEUTRAL;
                 title = context.getString(R.string.notification_incoming_call_neutral);
-                icon = R.drawable.ic_thumbs_up_down_black_24dp;
+                icon = R.drawable.ic_thumbs_up_down_24dp;
                 color = 0xffffff60;
                 break;
 
             case NEGATIVE:
                 channelId = CHANNEL_ID_NEGATIVE;
                 title = context.getString(R.string.notification_incoming_call_negative);
-                icon = R.drawable.ic_thumb_down_black_24dp;
+                icon = R.drawable.ic_thumb_down_24dp;
                 color = 0xffff0000;
                 break;
 
             default:
                 channelId = CHANNEL_ID_UNKNOWN;
                 title = context.getString(R.string.notification_incoming_call_unknown);
-                icon = R.drawable.ic_thumbs_up_down_black_24dp;
+                icon = R.drawable.ic_thumbs_up_down_24dp;
                 color = 0xffffff60;
                 break;
         }
@@ -147,7 +147,7 @@ public class NotificationHelper {
         String text = getDescription(context, numberInfo);
 
         return new NotificationCompat.Builder(context, CHANNEL_ID_BLOCKED_INFO)
-                .setSmallIcon(R.drawable.ic_thumb_down_black_24dp)
+                .setSmallIcon(R.drawable.ic_thumb_down_24dp)
                 .setColor(0xffffff60)
                 .setContentTitle(title)
                 .setContentText(text)
diff --git a/app/src/main/res/drawable/ic_file_download_black_24dp.xml b/app/src/main/res/drawable/ic_file_download_24dp.xml
similarity index 88%
rename from app/src/main/res/drawable/ic_file_download_black_24dp.xml
rename to app/src/main/res/drawable/ic_file_download_24dp.xml
index 370bba9..bf296ec 100644
--- a/app/src/main/res/drawable/ic_file_download_black_24dp.xml
+++ b/app/src/main/res/drawable/ic_file_download_24dp.xml
@@ -4,6 +4,6 @@
     android:viewportWidth="24.0"
     android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
+        android:fillColor="#FFFFFFFF"
         android:pathData="M19,9h-4V3H9v6H5l7,7 7,-7zM5,18v2h14v-2H5z" />
 </vector>
diff --git a/app/src/main/res/drawable/ic_thumb_down_black_24dp.xml b/app/src/main/res/drawable/ic_thumb_down_24dp.xml
similarity index 61%
rename from app/src/main/res/drawable/ic_thumb_down_black_24dp.xml
rename to app/src/main/res/drawable/ic_thumb_down_24dp.xml
index 26ba95c..3d9083e 100644
--- a/app/src/main/res/drawable/ic_thumb_down_black_24dp.xml
+++ b/app/src/main/res/drawable/ic_thumb_down_24dp.xml
@@ -1,9 +1,9 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
-        android:pathData="M15,3L6,3c-0.83,0 -1.54,0.5 -1.84,1.22l-3.02,7.05c-0.09,0.23 -0.14,0.47 -0.14,0.73v1.91l0.01,0.01L1,14c0,1.1 0.9,2 2,2h6.31l-0.95,4.57 -0.03,0.32c0,0.41 0.17,0.79 0.44,1.06L9.83,23l6.59,-6.59c0.36,-0.36 0.58,-0.86 0.58,-1.41L17,5c0,-1.1 -0.9,-2 -2,-2zM19,3v12h4L23,3h-4z"/>
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M15,3L6,3c-0.83,0 -1.54,0.5 -1.84,1.22l-3.02,7.05c-0.09,0.23 -0.14,0.47 -0.14,0.73v1.91l0.01,0.01L1,14c0,1.1 0.9,2 2,2h6.31l-0.95,4.57 -0.03,0.32c0,0.41 0.17,0.79 0.44,1.06L9.83,23l6.59,-6.59c0.36,-0.36 0.58,-0.86 0.58,-1.41L17,5c0,-1.1 -0.9,-2 -2,-2zM19,3v12h4L23,3h-4z" />
 </vector>
diff --git a/app/src/main/res/drawable/ic_thumb_up_black_24dp.xml b/app/src/main/res/drawable/ic_thumb_up_24dp.xml
similarity index 62%
rename from app/src/main/res/drawable/ic_thumb_up_black_24dp.xml
rename to app/src/main/res/drawable/ic_thumb_up_24dp.xml
index 34fb51a..e1d248f 100644
--- a/app/src/main/res/drawable/ic_thumb_up_black_24dp.xml
+++ b/app/src/main/res/drawable/ic_thumb_up_24dp.xml
@@ -1,9 +1,9 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
-        android:pathData="M1,21h4L5,9L1,9v12zM23,10c0,-1.1 -0.9,-2 -2,-2h-6.31l0.95,-4.57 0.03,-0.32c0,-0.41 -0.17,-0.79 -0.44,-1.06L14.17,1 7.59,7.59C7.22,7.95 7,8.45 7,9v10c0,1.1 0.9,2 2,2h9c0.83,0 1.54,-0.5 1.84,-1.22l3.02,-7.05c0.09,-0.23 0.14,-0.47 0.14,-0.73v-1.91l-0.01,-0.01L23,10z"/>
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M1,21h4L5,9L1,9v12zM23,10c0,-1.1 -0.9,-2 -2,-2h-6.31l0.95,-4.57 0.03,-0.32c0,-0.41 -0.17,-0.79 -0.44,-1.06L14.17,1 7.59,7.59C7.22,7.95 7,8.45 7,9v10c0,1.1 0.9,2 2,2h9c0.83,0 1.54,-0.5 1.84,-1.22l3.02,-7.05c0.09,-0.23 0.14,-0.47 0.14,-0.73v-1.91l-0.01,-0.01L23,10z" />
 </vector>
diff --git a/app/src/main/res/drawable/ic_thumbs_up_down_black_24dp.xml b/app/src/main/res/drawable/ic_thumbs_up_down_24dp.xml
similarity index 76%
rename from app/src/main/res/drawable/ic_thumbs_up_down_black_24dp.xml
rename to app/src/main/res/drawable/ic_thumbs_up_down_24dp.xml
index 4679d8b..c42bada 100644
--- a/app/src/main/res/drawable/ic_thumbs_up_down_black_24dp.xml
+++ b/app/src/main/res/drawable/ic_thumbs_up_down_24dp.xml
@@ -1,9 +1,9 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="24dp"
-        android:height="24dp"
-        android:viewportWidth="24.0"
-        android:viewportHeight="24.0">
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
     <path
-        android:fillColor="#FF000000"
-        android:pathData="M12,6c0,-0.55 -0.45,-1 -1,-1L5.82,5l0.66,-3.18 0.02,-0.23c0,-0.31 -0.13,-0.59 -0.33,-0.8L5.38,0 0.44,4.94C0.17,5.21 0,5.59 0,6v6.5c0,0.83 0.67,1.5 1.5,1.5h6.75c0.62,0 1.15,-0.38 1.38,-0.91l2.26,-5.29c0.07,-0.17 0.11,-0.36 0.11,-0.55L12,6zM22.5,10h-6.75c-0.62,0 -1.15,0.38 -1.38,0.91l-2.26,5.29c-0.07,0.17 -0.11,0.36 -0.11,0.55L12,18c0,0.55 0.45,1 1,1h5.18l-0.66,3.18 -0.02,0.24c0,0.31 0.13,0.59 0.33,0.8l0.79,0.78 4.94,-4.94c0.27,-0.27 0.44,-0.65 0.44,-1.06v-6.5c0,-0.83 -0.67,-1.5 -1.5,-1.5z"/>
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M12,6c0,-0.55 -0.45,-1 -1,-1L5.82,5l0.66,-3.18 0.02,-0.23c0,-0.31 -0.13,-0.59 -0.33,-0.8L5.38,0 0.44,4.94C0.17,5.21 0,5.59 0,6v6.5c0,0.83 0.67,1.5 1.5,1.5h6.75c0.62,0 1.15,-0.38 1.38,-0.91l2.26,-5.29c0.07,-0.17 0.11,-0.36 0.11,-0.55L12,6zM22.5,10h-6.75c-0.62,0 -1.15,0.38 -1.38,0.91l-2.26,5.29c-0.07,0.17 -0.11,0.36 -0.11,0.55L12,18c0,0.55 0.45,1 1,1h5.18l-0.66,3.18 -0.02,0.24c0,0.31 0.13,0.59 0.33,0.8l0.79,0.78 4.94,-4.94c0.27,-0.27 0.44,-0.65 0.44,-1.06v-6.5c0,-0.83 -0.67,-1.5 -1.5,-1.5z" />
 </vector>
diff --git a/app/src/main/res/layout/call_log_item.xml b/app/src/main/res/layout/call_log_item.xml
index 34cf997..17cc261 100644
--- a/app/src/main/res/layout/call_log_item.xml
+++ b/app/src/main/res/layout/call_log_item.xml
@@ -36,7 +36,7 @@
         android:layout_marginTop="8dp"
         android:layout_marginRight="1dp"
         android:layout_marginBottom="8dp"
-        android:src="@drawable/ic_thumb_down_black_24dp" />
+        android:src="@drawable/ic_thumb_down_24dp" />
 
     <Space
         android:layout_width="0dp"
diff --git a/app/src/main/res/layout/review_item.xml b/app/src/main/res/layout/review_item.xml
index dbba892..b981a36 100644
--- a/app/src/main/res/layout/review_item.xml
+++ b/app/src/main/res/layout/review_item.xml
@@ -13,7 +13,7 @@
         android:layout_marginRight="16dp"
         android:layout_marginBottom="10dp"
         android:tint="@color/rateNeutral"
-        android:src="@drawable/ic_thumbs_up_down_black_24dp"/>
+        android:src="@drawable/ic_thumbs_up_down_24dp"/>
     <LinearLayout
         android:layout_width="0dp"
         android:layout_height="wrap_content"
diff --git a/app/src/main/res/layout/reviews_summary.xml b/app/src/main/res/layout/reviews_summary.xml
index e1843d4..d73405f 100644
--- a/app/src/main/res/layout/reviews_summary.xml
+++ b/app/src/main/res/layout/reviews_summary.xml
@@ -20,7 +20,7 @@
         <androidx.appcompat.widget.AppCompatImageView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:src="@drawable/ic_thumb_down_black_24dp"
+            android:src="@drawable/ic_thumb_down_24dp"
             android:tint="@color/rateNegative" />
 
         <TextView
@@ -43,7 +43,7 @@
         <androidx.appcompat.widget.AppCompatImageView
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
-            android:src="@drawable/ic_thumbs_up_down_black_24dp"
+            android:src="@drawable/ic_thumbs_up_down_24dp"
             android:tint="@color/rateNeutral" />
 
         <TextView
@@ -66,7 +66,7 @@
         <androidx.appcompat.widget.AppCompatImageView
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
-            android:src="@drawable/ic_thumb_up_black_24dp"
+            android:src="@drawable/ic_thumb_up_24dp"
             android:tint="@color/ratePositive" />
 
         <TextView