Assign default adaptive icon background color

Bug: 126327184
Change-Id: I8c6db3cc0c2bf334862b60b0aa27aee4850039f1
diff --git a/iconloaderlib/src/com/android/launcher3/icons/BaseIconFactory.java b/iconloaderlib/src/com/android/launcher3/icons/BaseIconFactory.java
index 76abe8d..96b0a9e 100644
--- a/iconloaderlib/src/com/android/launcher3/icons/BaseIconFactory.java
+++ b/iconloaderlib/src/com/android/launcher3/icons/BaseIconFactory.java
@@ -48,7 +48,7 @@
     private ShadowGenerator mShadowGenerator;
 
     private Drawable mWrapperIcon;
-    private int mWrapperBackgroundColor;
+    private int mWrapperBackgroundColor = DEFAULT_WRAPPER_BACKGROUND;
 
     protected BaseIconFactory(Context context, int fillResIconDpi, int iconBitmapSize) {
         mContext = context.getApplicationContext();