UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

Steps to reproduce the problem:
Case A:
1. Visit a website with a dark (grey) favicon
2. Observe the favicon is clearly visible in a regular tab
3. Open the same page in an incognito tab which has a dark tab colour
4. The icon becomes invisible/poorly visible

Case B:
1. Visit a website which has a favicon in the same colour as the website's theme colour (very common and an obvious choice to make)
2. Observe the favicon is clearly visible in a regular tab
3. Open the same page on Chrome for Android and observe the tab has the same theme colour as the favicon
4. The icon becomes invisible/poorly visible

What is the expected behavior?
That the icons remains properly visible, or that we as developers get the tools to provide multiple icons, for light and/or dark backgrounds.

What went wrong?
The icon is poorly visible or completely invisible by on certain tab colours.

Did this work before? Yes Before theme colours were supported, and before incognito tabs became so dark.

Does this work in other browsers? N/A

Chrome version: 63.0.3239.132  Channel: stable
OS Version: OS X 10.11.5
Flash Version: 

The two issues are that;

1) Dark icons are poorly visible in incognito tabs;
2) App icons of the same colour as the theme colour become invisible on mobile tabs.

It would be great if we as developers could specify multiple (different) favicons, depending on the background colour of the tab, so that Chrome can show the appropriate icon and so that the icons remain properly visible at all times.
 

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