Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, see this article.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

I've lost the Firefox Developer Edition's dark theme !?

  • 2 replies
  • 11 have this problem
  • 11 views
  • Last reply by claudio15

claudio15
claudio15
more options

Hi There,

After I first sync Firefox Dev Edition I lost the beautiful dark theme and got the bars in gray again.

I'm using Firebug and Web Dev Toolbar.

How could I activate the dark theme again? I tried using Customize / Theme but no way, I still have everything in gray!

Thanks for your help!

Cheers

Claude

Hi There, After I first sync Firefox Dev Edition I lost the beautiful dark theme and got the bars in gray again. I'm using Firebug and Web Dev Toolbar. How could I activate the dark theme again? I tried using Customize / Theme but no way, I still have everything in gray! Thanks for your help! Cheers Claude

Chosen solution

Does changing these prefs work? 

browser.devedition.theme.enabled = true
devtools.theme = dark

Maybe also check: 

lightweightThemes.selectedThemeID = firefox-devedition@mozilla.org
Read this answer in context 👍 5

All Replies (2)

cor-el
cor-el
  • Moderator
more options

Chosen Solution

Does changing these prefs work? 

browser.devedition.theme.enabled = true
devtools.theme = dark

Maybe also check: 

lightweightThemes.selectedThemeID = firefox-devedition@mozilla.org

Modified by cor-el

claudio15
claudio15 Question owner
more options

Excellent, devtools.theme was "light" !

Thanks for your help.

Cheers