Changed the color of low-priority notifications

Bug: 16010701
Change-Id: I7afc351a5a669bbb71b2620afe310b250da66b77

Author: Selim Cinek

packages/SystemUI/res/values/colors.xml

@@ -83,7 +83,7 @@
     <color name="notification_material_background_dimmed_color">#d4ffffff</color>
 
     <!-- The color of the material notification background when low priority -->
-    <color name="notification_material_background_low_priority_color">#ffdcdcdc</color>
+    <color name="notification_material_background_low_priority_color">#ffe0e0e0</color>
 
     <!-- The color of the ripples on the untinted notifications -->
     <color name="notification_ripple_untinted_color">#20000000</color>