chromium/chrome/browser/single_tab/android/java/res/drawable/single_tab_card_ripple.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2023 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<ripple xmlns:android="http://schemas.android.com/apk/res/android"
  android:color="?android:attr/colorControlHighlight">
  <item android:id="@android:id/mask"
      android:drawable="@drawable/home_surface_ui_background" />
</ripple>