Currently the best black theme Rated 5 out of 5 stars
I have to admit I am a redshift loyalist and used redshift for version 1 and 2 of Firefox.
For Firefox3 I went to Nasa.
Never liked it, but it was the only other tolerable black theme...
Bye bye Nasa (Finally!)
Only things I don't like about the theme is the address bar has a white background (Which is odd for a black theme. I figure a black background with white text all around was a given)
and the umm.. bright blue buttons.
I will be using this theme till redshift ships or possibly longer if the next iteration of redshift fails to compete with zblack.