Fix headline coloring

src/main/res/layout/file_details_fragment.xml

@@ -232,6 +232,7 @@
 			<TextView
 				android:id="@+id/fdShareTitle"
 				style="?android:attr/listSeparatorTextViewStyle"
+				android:textColor="@color/color_accent"
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
 				android:layout_marginBottom="@dimen/standard_half_margin"
@@ -262,6 +263,7 @@
 			<TextView
 				android:id="@+id/fdShareWithUsersTitle"
 				style="?android:attr/listSeparatorTextViewStyle"
+				android:textColor="@color/color_accent"
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
 				android:layout_gravity="start"