Developer edition theme option for TenFourFox works great

funtoosh's Avatar


06 Jun, 2016 10:45 AM

Oh, just a tip, I just discovered you can activate the developer edition 'dark' theme on TFF as well via about:config and setting browser.devedition.theme.enabled to true. Feels somewhat more responsive than the default FF UI.

Ups, is this option on it's way out? Please keep! .-)


  1. 1 Posted by funtoosh on 08 Jun, 2016 07:30 AM

    funtoosh's Avatar

    Once activated in about:config, you even get a toggle button in the 'customize' menu. (Which comes in handy if you are like me and need to make screenshots with non-irritating browser chrome often.)

  2. 2 Posted by Miles Raymond on 29 Oct, 2019 07:02 AM

    Miles Raymond's Avatar

    This doesn't seem to work anymore. How do I get the dark theme back on a clean install?

  3. Support Staff 3 Posted by Chris (chtrusch... on 29 Oct, 2019 06:09 PM

    Chris (chtrusch)'s Avatar

    This only worked up to TFF 38. Recent FF versions have this as "Dark Theme" and "Light Theme" in the official themes gallery, but TFF doesn't.

Reply to this discussion

Internal reply

Formatting help / Preview (switch to plain text) No formatting (switch to Markdown)

Attaching KB article:


Already uploaded files

  • Bild_1135.png 1.53 MB

Attached Files

You can attach files up to 10MB

If you don't have an account yet, we need to confirm you're human and not a machine trying to post spam.

Keyboard shortcuts


? Show this help
ESC Blurs the current field

Comment Form

r Focus the comment reply box
^ + ↩ Submit the comment

You can use Command ⌘ instead of Control ^ on Mac