diff --git a/scripts/developer/libraries/utils.js b/scripts/developer/libraries/utils.js
index f39f4d7913..0da9703c87 100644
--- a/scripts/developer/libraries/utils.js
+++ b/scripts/developer/libraries/utils.js
@@ -311,3 +311,6 @@ clamp = function(val, min, max){
      return Math.max(min, Math.min(max, val))
  } 
 
+easeIn = function(t) {
+    return Math.pow(t / 1, 5);
+}
diff --git a/scripts/system/audioMuteOverlay.js b/scripts/system/audioMuteOverlay.js
index 458efad6d0..d08fafc88d 100644
--- a/scripts/system/audioMuteOverlay.js
+++ b/scripts/system/audioMuteOverlay.js
@@ -15,8 +15,10 @@
 //
 
 (function() { // BEGIN LOCAL_SCOPE
+    Script.include(utilsPath);
+
     var TWEEN_SPEED = 0.025;
-    var LERP_AMOUNT = 0.25;
+    var MIX_AMOUNT = 0.25;
 
     var overlayPosition = Vec3.ZERO;
     var tweenPosition = 0;
@@ -47,14 +49,6 @@
         }    
     }
 
-    function lerp(a, b, val) {
-        return (1 - val) * a + val * b;
-    }
-
-    function easeIn(t) {
-        return Math.pow(t / 1, 5);
-    }
-
     function getOffsetPosition() {
         return Vec3.sum(Camera.position, Quat.getFront(Camera.orientation));
     }
@@ -88,19 +82,10 @@
                 endColor[color] = storedColor;
             }
         }
-
-        // update position based on LERP_AMOUNT
-        var offsetPosition = getOffsetPosition();
-        overlayPosition.x = lerp(overlayPosition.x, offsetPosition.x, LERP_AMOUNT);
-        overlayPosition.y = lerp(overlayPosition.y, offsetPosition.y, LERP_AMOUNT);
-        overlayPosition.z = lerp(overlayPosition.z, offsetPosition.z, LERP_AMOUNT);
-
+        // mix previous position with new and mix colors
+        overlayPosition = Vec3.mix(overlayPosition, getOffsetPosition(), MIX_AMOUNT);
         Overlays.editOverlay(overlayID, {
-            color: {
-                red: lerp(startColor.red, endColor.red, easeIn(tweenPosition)),
-                green: lerp(startColor.green, endColor.green, easeIn(tweenPosition)),
-                blue: lerp(startColor.blue, endColor.blue, easeIn(tweenPosition))
-            },
+            color: colorMix(startColor, endColor, easeIn(tweenPosition)),
             position: overlayPosition,
             rotation: Camera.orientation
         });