Review for CuteButtons by SoCu
Rated 5 out of 5 stars
Thanks for answering,
Do you have in your plans to make it to work with FF 57?
If the WebExtensions API doesn't support it, nothing I can do.
As long as FF keeps support for UserChrome.css, you can still manually add the CSS (just stick the mosaic in the same folder as userchrome.css).
To create your own collections, you must have a Mozilla Add-ons account.