Change firefox button icon not work anymore Puntuado con 5 de 5 estrellas

Used to work like 5 versions before but not now after I was introduced to a new update of FXChrome 26.1.
firefox button icon, Install with Stylish cannot install it anymore, even preview not show it on the top-left.
Now i have Firefox default logo. But really i miss Alien image. I don't know why not work any more :(

I'm using Iceweasel 26.0 on Crunchbang 11/Debian

Strange, but even on author web is not listened ?
is this option disabled or taked off?


Esta valoración es de una versión anterior del complemento (26.1).