Rated 5 out of 5 stars

Stopped working on 12.0a1 nightly builds (I wanted x64 support) However, after running across "Nightly Tester Tools" add-on, I was able to get ColorZilla working again and from what i can tell, it is working flawlessly and incorrectly being reported as incompatible with the v12 nightly builds.

This review is for a previous version of the add-on (2.6.4).