ring-android/app/src/main/res/drawable/icon_focused.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="oval">
    <solid android:color="#4DEEEEEE"></solid>
    <size
        android:width="96dp"
        android:height="96dp"/>
</shape>