Well, i really like colorzilla, unfortunally it doesn’t work anymore under my 64 bit ubuntu, this seems to be a common problem, but none from the suggested solutions works on my system.

So i looked for alternatives, it would look like there is no really firefox add on alternative, but i found 2 nice colorpickers on OS base gpick and gcolor.

Gcolor

can be installed over apt-get so just use:

sudo aptitude install gcolor2

to install it, its a rather simple tool, but does what it has to do.

Gpick

Gpick is clearly the more sophisticated tool, you can select colors by using <space> so you don’t have to click on the eyedropper icon every time, it can store several colors and has some nice color palate features build in. You can download the deb (and other installers) here.

My conclusion is that i would still prefer colorzilla, but for the moment i’ll go with with Gpick, it is a little bit more complicated as Gcolor2  but i think working with it is a little bit faster.