session-android/res/layout/conversation_item_sent_audio.xml

<?xml version="1.0" encoding="utf-8"?>
<org.thoughtcrime.securesms.components.AudioView
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/audio_view"
        android:layout_width="210dp"
        android:layout_height="wrap_content"
        app:foregroundTintColor="?android:colorControlNormal"
        app:backgroundTintColor="?message_sent_background_color"
        android:visibility="gone"/>