MethaneInspection / app / src / main / res / drawable / layout_divider_vertical.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">

    <size
        android:width="2dp"
        android:height="@dimen/dp_20" />

    <solid android:color="@color/mainThemeColor" />
</shape>