res/drawable/bg_material_button.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
     SPDX-FileCopyrightText: 2023 The LineageOS Project
     SPDX-License-Identifier: Apache-2.0
-->

<ripple
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:color="?colorControlHighlight">

    <item>
        <shape android:shape="rectangle">
            <solid android:color="@color/system_neutral2_700" />
            <corners android:radius="512dp" />
        </shape>
    </item>
</ripple>