chromium/ui/android/java/res/color/filled_button_ripple_color.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2018 The Chromium Authors
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->

<selector
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:ignore="UnusedResources">
    <item android:color="@color/white_alpha_32" android:state_pressed="true"/>
    <item android:color="@color/white_alpha_24" android:state_focused="true"/>
    <item android:color="@color/white_alpha_8" android:state_hovered="true"/>
    <item android:color="@android:color/transparent" />
</selector>