Take a look at Control Freak: https://chrome.google.com/webstore/detail/control-freak/jgnchehlaggacipokckdlbdemfeohdhc https://chrome.google.com/webstore/detail

Take a look at Control Freak: https://chrome.google.com/webstore/detail/control-freak/jgnchehlaggacipokckdlbdemfeohdhc https://chrome.google.com/webstore/detail/control-freak/jgnc... It's well-maintained and allows a user to inject custom CSS or JS on any URL, domain or all sites for their own tweaks and purposes. Maintaining these overrides just one click away offers a much better experience than hunting down this Custom.css buried within the filesystem.