Rated 1 out of 5 stars
I think this extension is useless, because you can set colors in Firefox Options, and these is for all sites in the same way.
It looks very horrible!
A very better extension for this is NoSquint and it even permits per-site settings!
So I offered you to try my extension in a support forum and you trash it and give it a 1-star rating? Gee, thanks. If the Firefox Options panel actually *worked* for changing backgrounds of all websites then I wouldn't have built this extension... duh.
And for future reference, read the Review Guidelines, and particularly the section about what the star ratings mean: