Customise the appearance of and the text on the App Button however you want.
You can use any CSS supported by your version of Firefox.
Add other menus/actions if you right or middle click on the App Button.
By default you get control over how it appears normally, when you hover the cursor over it and when it is open.
Requires a little knowledge of CSS if you wish to do more than what the presets offer.
Advanced users can also change the selectors via about:config, know that changes may affect all of browser.xul
You can use any CSS supported by your version of Firefox.
Add other menus/actions if you right or middle click on the App Button.
By default you get control over how it appears normally, when you hover the cursor over it and when it is open.
Requires a little knowledge of CSS if you wish to do more than what the presets offer.
Advanced users can also change the selectors via about:config, know that changes may affect all of browser.xul