Toning down overscroll overlay (issue 11023942)

Change-Id: Ic019ca7b6f076236ec0b85f96446ec555e7bde1f
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index a114ec3..81f9af2 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -95,6 +95,7 @@
     private ArrayList<FolderRingAnimator> mFolderOuterRings = new ArrayList<FolderRingAnimator>();
     private int[] mFolderLeaveBehindCell = {-1, -1};
 
+    private float FOREGROUND_ALPHA_DAMPER = 0.65f;
     private int mForegroundAlpha = 0;
     private float mBackgroundAlpha;
     private float mBackgroundAlphaMultiplier = 1.0f;
@@ -349,6 +350,7 @@
             mOverScrollForegroundDrawable = mOverScrollRight;
         }
 
+        r *= FOREGROUND_ALPHA_DAMPER;
         mForegroundAlpha = (int) Math.round((r * 255));
         mOverScrollForegroundDrawable.setAlpha(mForegroundAlpha);
         invalidate();