it's great I love it !

is there a way to make it use the dark theme for the menus and newtab page ?

Add support to Android Version Plz

Adds a bit of personality to Firefox

Love it! As an office slave I usually forget what time it is and this serves as a good reminder. :p

This is a neat idea, and it shows off how powerful the "limited" WebExtension API really is. Nicely done!

If you're comfortable with editing your userChrome.css file, it's possible to have this effect applied to your Bookmarks and History sidebars as well. Details here: https://www.reddit.com/r/FirefoxCSS/comments/7wmewg/i_know_its_a_long_shot_but_can_we_apply/du2cfrb/

I don't think it's possible to apply to other sidebars, but I'm not the expert.

Extremely pretty, reminds me of iOS 7

Nice effect =)