You see the orange (on Linux gray) Firefox button if the Menu Bar is hidden.<br /> You can hide the Menu bar via Ver > Barras de herramientas or via Firefox > Opciones.<br /> If you need to access the hidden Menu bar then press F10 or hold down the Alt key to make the Menu Bar appear temporarily.<br /> See also: *https://support.mozilla.com/kb/Options+window+-+Content+panel You can also inspect the permissions on the <b>about:permissions</b> page.<br /> You can open about: pages via the location bar like you open a website.