Revert to Google's 2013-2015 Favicon
This JavaScript is a Greasemonkey script for the Firefox web browser. It may also work as a Tampermonkey script for Google's Chrome browser, but that was not tested. (If anyone tests this in Chrome, and it works, I'd appreciate a message informing me of that - I don't use Chrome).
On about 01 Sept 2015, Google changed their Favicon. A previous Greasemonkey script was released ("Revert Google's Favicon 1.0") by "Anonymous", who even promoted it in a YouTube video (before he closed his YouTube account and the video was deleted). But it had errors in the "include" URLs - it did not work on URLs such as "books.google.com".
Additionally, a Stylish User Script was released, but it also had an error - it did NOT revert the Address Bar Google favicon. This code corrects for both shortcomings - in both previous Greasemonkey Script and Stylish User Style - and is a Greasemonkey script that has been tested, and works for all Google domains tried (as it should, taking into consideration the globally generic "include" domains) - AND for all Google favicons.
<< Enjoy! >>
Once this script is installed - or enabled AFTER being disabled - already-open Google webpages need to be Refreshed (F5), for the revert Favicon script implementation. ALL Google Favicons - for the "URL Bar/Address Bar/Location Bar", "Web Browser Tabs", "Bookmark Menu" and "Bookmark Toolbar" - will revert back to the Google icon used before the 01 Sept 2015 change, to the...
white lower-case "g" in a blue square.
Include URLs should have "*" before and after ".google.", so the script works globally on Google sites, i.e. with "books.google.com", "www.google.com", "myaccount.google.com", etc (*anything.google.*anything), including, of course, both http:// and https://.
Installed filename:
Revert_to_Googles_2013-2015_Favicon.user.js