This extension re-implements the old Firefox button from Firefox 4–28 using WebExtension APIs. # Acknowledgements: Inspired by Aris's Classic Theme Restorer. Uses the Pastel SVG icon set by Michael Buckley which is licensed under the Creative Commons Attribution NonCommercial Share Alike 4.0 license. Help translate this extension at the GitHub repository. Since version 0.1.6, this extension has support for Firefox Multi-Account Containers by Mozilla, this requires access to cookies and container tabs.