Great as far as it goes Rated 4 out of 5 stars
Beautiful and simple. No problems found.
If it only allowed you to invert the colors to get a white on black night mode, I'd give it six stars.
Move to other toolbar Rated 4 out of 5 stars
It works, but I'd like to be able to move it off the address (navigation) bar to the bookmarks bar or status bar.
(only tested in Pale Moon 15.2)
Rated 5 out of 5 stars
I like the plugin a lot. Videos on Youtube and the like are still colored, by the way, which makes it even better. If you have a black/white themed desktop or just want to shut out the "screaming" colors of the web it does a great job!
By the way, I use linux and invert colors of the whole xserver sometimes. So my whole desktop switches from black on white (mostly by day) to white on black (by night). Only the web made trouble since surfing the web with inverted colors doesn't work well. This plugin solved my problem.