Yep, the first style manager extension was released in 2005 (Stylish). Style manager extensions are a much more frictionless way to manage and share styles The

Yep, the first style manager extension was released in 2005 (Stylish). Style manager extensions are a much more frictionless way to manage and share styles The WebExtensions API has APIs for injecting styles: https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/insertCSS https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/Web...