Fix folder hint text color. Likely a regression from upgrading the Activity theme

Bug: 18204650
Change-Id: I5e23df5f4f8f1f8ca7a22c8a62797e77c9a4a9e1
diff --git a/res/layout/user_folder.xml b/res/layout/user_folder.xml
index 4e5303a..31e9da0 100644
--- a/res/layout/user_folder.xml
+++ b/res/layout/user_folder.xml
@@ -45,6 +45,7 @@
         android:hint="@string/folder_hint_text"
         android:textSize="14sp"
         android:textColor="#ff777777"
+        android:textColorHint="#ff808080"
         android:textColorHighlight="#ffCCCCCC"
         android:textCursorDrawable="@null"
         android:gravity="center_horizontal"