Contact list toolbar elevation decreased to 4dp.

app/src/main/res/layout/contact_list.xml

@@ -18,7 +18,18 @@
     android:layout_height="match_parent"
     android:orientation="vertical">
 
-    <include layout="@layout/toolbar_default" />
+    <android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:app="http://schemas.android.com/apk/res-auto"
+        android:id="@+id/toolbar_default"
+        android:layout_width="match_parent"
+        android:layout_height="?attr/actionBarSize"
+
+        android:background="?attr/colorPrimary"
+        android:elevation="4dp"
+        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
+        app:titleTextAppearance="@style/ToolbarTitle" />
+
 
     <RelativeLayout
         android:id="@+id/container"