packages/SystemUI/res/color/qs_detail_empty.xml - platform/frameworks/base - Git at Google

 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:alpha="0.14" android:color="@*android:color/quaternary_device_default_settings" />
 </selector>
	<?xml version="1.0" encoding="utf-8"?>
	<selector xmlns:android="http://schemas.android.com/apk/res/android">
	<item android:alpha="0.14" android:color="@*android:color/quaternary_device_default_settings" />
	</selector>