Same with icons in the site-settings > notifications. 

Spec: 
https://folio.googleplex.com/chrome-ux-specs-and-sources/Chrome%20Inner%20Pages/03-Settings/specs#%2FSPEC-settings_color.png%3Fz=width

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/17218793515d69f9512895ff9b2e71f89d57982f

commit 17218793515d69f9512895ff9b2e71f89d57982f
Author: scottchen <scottchen@chromium.org>
Date: Wed Mar 08 00:41:28 2017

MD Settings: fix setting-subpage icon color value.

BUG= 654962 
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2733083002
Cr-Commit-Position: refs/heads/master@{#455313}

[modify] https://crrev.com/17218793515d69f9512895ff9b2e71f89d57982f/chrome/browser/resources/settings/settings_page/settings_subpage.html