chromium/components/browser_ui/widget/android/java/res/color/chip_background_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">
    <!-- disabled -->
    <item android:color="@android:color/transparent" android:state_enabled="false" />

    <!-- selected -->
    <item android:color="@macro/chip_bg_selected_color"
        android:state_selected="true" />

    <!-- default state -->
    <item android:color="@macro/chip_bg_color" />
</selector>