diff --git a/library/src/main/java/com/google/maps/android/clustering/view/ClusterRenderer.java b/library/src/main/java/com/google/maps/android/clustering/view/ClusterRenderer.java
index c89621f5b..548df063b 100644
--- a/library/src/main/java/com/google/maps/android/clustering/view/ClusterRenderer.java
+++ b/library/src/main/java/com/google/maps/android/clustering/view/ClusterRenderer.java
@@ -65,4 +65,9 @@ public interface ClusterRenderer<T extends ClusterItem> {
      * Called when the view is removed.
      */
     void onRemove();
+
+    /**
+     * Called to determine the color of a Cluster.
+     */
+    int getColor(int clusterSize);
 }
diff --git a/library/src/main/java/com/google/maps/android/clustering/view/DefaultClusterRenderer.java b/library/src/main/java/com/google/maps/android/clustering/view/DefaultClusterRenderer.java
index a1cec59a5..dc87bcd01 100644
--- a/library/src/main/java/com/google/maps/android/clustering/view/DefaultClusterRenderer.java
+++ b/library/src/main/java/com/google/maps/android/clustering/view/DefaultClusterRenderer.java
@@ -227,7 +227,8 @@ private SquareTextView makeSquareTextView(Context context) {
         return squareTextView;
     }
 
-    protected int getColor(int clusterSize) {
+    @Override
+    public int getColor(int clusterSize) {
         final float hueRange = 220;
         final float sizeRange = 300;
         final float size = Math.min(clusterSize, sizeRange);