Anycolor 0.3.9 with link Rated 5 out of 5 stars
Thanks to manbat for the link for ver.0.3.9: http://www.mediafire.com/download.php?u2dfqksstxumdpt
working with Firefox 4 to 19 currently, Also seems to work fine in ff 20.0a1 as well.
Don't forget to spread the word.
For more info/commenting try: http://forums.mozillazine.org/viewtopic.php?f=48&t=2438261 or https://groups.google.com/forum/?fromgroups#!forum/firefox-add-on-anycolor
If you can't click on links, just copy & paste in the address-bar.
Note: After you download it, you'll have to locate it on your pc, click and drag it over to firefox & drop it inside the browser so that it will install.