WordPress/src/main/res/drawable/indicator_circle_selected.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="oval">
    <stroke
        android:width="1dp"
        android:color="@color/blue_dark"/>
    <solid android:color="@color/white"/>
</shape>