Narrow bisect:
https://chromium.googlesource.com/chromium/src/+log/3d2d190935003c2b4a4ad7b3d2cf2c580214a272..95ba699eba9413f257437534e9e58dc42bfc82ae?pretty=fuller&n=100

Suspecting: r399930

Note: Above issue is not seen on Windows and Linux OS.

Adding RB label as this is a recent regression.

Hey shrike, I'm looking into this and I'm not sure if the icon should be black or white since the cookie theme is a bit dark.

shrike@: Can we get an update on this as per C#3. Would be good to have a fix for this before M-53 is branched(Probably next week).

To clarify steps to reproduce:

1. Install the theme at https://chrome.google.com/webstore/detail/cookies-milk/niboghheambbpfbehljofglebpmofjgk?hl=en
2. Open https://chromium.googlesource.com/chromium/src/+log/52.0.2720.0..52.0.2721.0?pretty=fuller&n=10000 in a new tab (let's call it Tab 2)
3. Open chrome://settings/ in a new tab and reset to the default tab

The problem is that the tab icon for Tab 2 (which is the default favicon) is still colored brown instead of the default favicon color. See attached screenshot.

I think the default color for the default favicon is black, but I don't remember. When the theme changes, the tab favicon view/button is not getting redrawn. The fix is perhaps similar to the one I recently made for the close button, which had a similar problem: https://codereview.chromium.org/2080973002/.

Deleted: Screen Shot 2016-06-23 at 9.36.38 AM.png 9.8 KB

	Screen Shot 2016-06-23 at 9.36.38 AM.png 9.8 KB View Download

Friendly ping to get an update on this blocker issue.

It's in the works https://codereview.chromium.org/2126043002/

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7d57b7e232022e031e8a0908215f9ad4eee61117

commit 7d57b7e232022e031e8a0908215f9ad4eee61117
Author: spqchan <spqchan@chromium.org>
Date: Thu Jul 14 22:51:00 2016

[Material][Mac] Fix Default Favicon's Color

Default favicon now has the same color as the close button. This CL
also makes sure that the favicon's color gets updated when the theme
changes. CloseButtonColor has been refactored.

BUG= 621015 ,  625821 

Review-Url: https://codereview.chromium.org/2126043002
Cr-Commit-Position: refs/heads/master@{#405612}

[modify] https://crrev.com/7d57b7e232022e031e8a0908215f9ad4eee61117/chrome/browser/ui/cocoa/hover_close_button.h
[modify] https://crrev.com/7d57b7e232022e031e8a0908215f9ad4eee61117/chrome/browser/ui/cocoa/hover_close_button.mm
[modify] https://crrev.com/7d57b7e232022e031e8a0908215f9ad4eee61117/chrome/browser/ui/cocoa/tabs/alert_indicator_button_cocoa.mm
[modify] https://crrev.com/7d57b7e232022e031e8a0908215f9ad4eee61117/chrome/browser/ui/cocoa/tabs/tab_strip_controller.mm
[modify] https://crrev.com/7d57b7e232022e031e8a0908215f9ad4eee61117/chrome/browser/ui/cocoa/tabs/tab_view.h
[modify] https://crrev.com/7d57b7e232022e031e8a0908215f9ad4eee61117/chrome/browser/ui/cocoa/tabs/tab_view.mm

Unable to repro this issue on MAC (10.11.5) for Google Chrome Canary Version - 54.0.2800.0

Screen-recording is attached.

@dmascarenhas: Could you please perform the steps mentioned beneath and let us know your observations. 

1. Update your Google Chrome Canary Version - 54.0.2800.0
2. Re-test the same on a clean profile [chrome://settings -> Add Person]

Thank you.

Deleted: 621015.mov 16.1 MB

621015.mov 16.1 MB Download