current/support/design/res/values/colors.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2015 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
-->

<resources>

    <!-- Shadow color for the first pixels of a shadow -->
    <color name="shadow_start_color">#44000000</color>
    <!-- Shadow color for the middle pixels of a shadow -->
    <color name="shadow_mid_color">#14000000</color>
    <!-- Shadow color for the furthest pixels of a shadow -->
    <color name="shadow_end_color">@android:color/transparent</color>

    <color name="error_color">#FFDD2C00</color>

    <color name="snackbar_background_color">#323232</color>

</resources>