Signal-Android/app/src/main/res/layout/dsl_divider_item.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <View
        android:alpha="0.16"
        android:layout_width="match_parent"
        android:layout_height="1.5dp"
        android:layout_marginTop="16.25dp"
        android:layout_marginBottom="16.25dp"
        android:background="@color/signal_colorOutline" />

</FrameLayout>