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Latest News

November 2017 With the release of Firefox Quantum, the support for legacy themes has been discontinued by Mozilla. This project has therefore been suspended.

Keep the feedback, suggestions, bug reports, and extension request coming – Feel free to leave a comment on the page or contact me.

Upcoming Changes (Reported Bugs)


  • Modified icon set
  • Additional application compatibility:
    • Flock
    • K-Meleon
    • Chrome
  • Addon fixes:
    • MR Tech Toolkit(error console)


  • Addon fixes:
    • Thundernote
    • Xnote compatibility font color
    • MR Tech Toolkit (options menu and error console) colors


PitchDark is a dark theme set for Mozilla Firefox and Thunderbird aimed at users who prefer the negative color scheme (light text on dark background). While it is a dark theme it is designed with visibility, usability, and maximum screen real estate in mind. My inspiration was the Phoenity Dark themes (by Lim Chee Aun and Tom Wilson), which are currently outdated.

PitchDark project
PitchDark project
Design Considerations

PitchDark is meant to maintain the light text on dark background look, but instead uses dark harmonious natural tones, with black as accents. I like grays and blacks, but most dark themes take it to an extreme. The “birch” colored dark brown was chosen specifically to avoid blending in or detracting from fresh website designs that use black and gray for webpage backgrounds.

To reduce the amount of image work required, I’ve moved to the standard icon sets for Firefox and Thunderbird. Future versions may make use of the Tango icon set or have custom icons.


The lastest builds and previous versions can be found at the Mozilla Addons site:

I’m a proponent of free software, but members of the community sometimes ask for a way to show their support. If you happen to be in a giving mood, please consider donating (securely) to me via paypal. Thanks!

Awards and Recognition



Version 4.0.9

  • Sync with latest Firefox 21 Omni
  • Fixed link color on DirListing
  • Fixed link color on about:license
  • Fixed font color on about:compartments
  • Fixed styling on Inspector

Version 4.0.8

  • Updates for compatibility with Firefox 19
  • Fix for about:memory
  • Small bug fixes

Version 4.0.7

  • Fix for dropdown menus
  • Fix for scrollbuttons in tab bar

Version 4.0.6

  • Fix for addons page
  • Improved contrast for focused elements (buttons/menulists; e.g. about:permissions)
  • Improved contrast for about:memory
  • Styling for New Tab cells
  • Various fixes for devtools

Version 4.0.5

  • fix for colors on sync manager
  • fix for colors on about:cache
  • fix for colors on about:memory
  • fix for colors on about:permissions
  • added new style inspector theming
  • bugfix for “door hangers” (remember password, location, install, etc.)
  • bugfix for tabgroup text labels overlapping

Version 4.0.4

  • Fix for icons on about:Add-ons page (extensions, appearance, plugins, language)
  • Updated compatibility with Firefox 10

Version 4.0.3

  • Minor color fix for new blank tabs

Version 4.0.2

  • Exclude app content from Aero Glass effects (i.e. fix plugin washout problems)
  • Minor update to color definition in browser.css that was causing a warning

Version 4.0.1

  • Added compatibility for Firefox 6.*
  • Small visual improvements to downloads window

Version 4.0.0

  • Full theme update for compatibility with FX 4.0+
  • Added custom styling to fix bug where caption buttons appear black in maximized mode on Windows
  • Small image enhancements

Version 3.6.3

  • Fix for font colors on download window
  • Fix autocomplete url color on awesome bar

Version 3.6.2

  • Fixed extension specific theming
  • Adjusted menu color when browser is inactive
  • Fixed button colors
  • Removed border definitions that created warnings

Version 3.6.1

  • Change Chrome registration (rdf to chrome.manifest)
  • Fix for RSS button in address bar
  • Moved extensions chrome up to xpi_skins folder

Version 3.6.0

  • Firefox 3.6 compatibility
  • Fix for new tab button and scrollbar-button arrows
  • Color fix on Untrusted Connection page (AboutCertError)
  • Improved hover color for active menubar menu items
  • Fix for toolbarbutton border color – hover/click (pop vs. punch)
  • Slightly lightened up the inactive tabs color
  • Updated options icons
  • Enabled rating view in extensions window
  • Fix for image shift on unified key (Large back/forward) button
  • Fix for groupbox titles
  • Addon fixes
    • Facebook Toolbar
    • Google Toolbar (v6)
    • Live Http Headers
    • ReminderFox
    • Update Notifier
  • Addon Tests (no code added, but verified compatibility)
    • Feed Sidebar
    • FootieFox
    • Fox Clocks
    • OpenBook
    • Speed Dial
    • WizzRSS (being retired anyway)

Version 3.5.0

  • Firefox 3.5 compatibility

Version 3.0.4

  • Fix for larger height menu items introduced in last version (now condensed again)
  • KwiClick compatibility

Version 3.0.3

  • Firefox 3.1 compatibility
  • aboutCertError, aboutPrivacyBrowsing, aboutSessionRestore
  • Color fix on “about:robots” page
  • Color fix on combined back/forward button
  • Lightened throbber color
  • Fix for Large back/forward button (image shift)
  • Sidebar text color
  • Sidebar close button color
  • Searchbar engine button fix (too rounded)
  • Tab bar/tab contrast adjustment
  • Tab icon / loading icon image change
  • White areas in the configuration dialogs/richlistboxs
  • Dropdown arrows on the navigation bar seem very small
  • Dropdown padding fix (main bar and bookmarks)
  • Changed inactive tab/textbox color to gray instead of white
  • Enforced 16×16 favicon for bookmarks
  • Changes for All in One Sidebar
  • DOM Inspector fixes
  • GoogleToolbar fixes

Version 3.0.2

  • Code sync and graphic update with the RC1 release
  • Removed unused graphics

Version 3.0.1

  • Fix for toolbar colors in Linux/OS X

Version 3.0.0

  • Complete recode from Firefox 3.0 classic theme.
  • Customize toolbar fix
  • Graphics inherited from classic theme
  • notification/progress bar fix
  • tab improvements
  • import screen fix
  • proper handling for DOM inspector
  • netError styling

Version 2.0.2

  • Code sync (communicator, global, mozapps folders) with PitchDark for TB
  • improved tab handling

Version 2.0.0

  • Compatibility fix for Firefox 2.0
  • Options Menu changes
  • Addons Menu changes
  • Tab bar changes

Version 1.5.6

  • fixed annoying pixel jump in toolbarbuttons (caused by disabled buttons having borders)
  • Console spacing changes

Version 1.5.5

  • HelpfileLayout.css added
  • NetError.css added
  • synchronized code to latest classic.jar
  • end of lines changed to just line feeds
  • all images re-exported to decrease theme size
  • small visibility changes

Version 1.5.4 – DROPPED

  • decreased tabbox size
  • modified splitter borders
  • separator size/color changes
  • added netError.css
  • small visibility changes

Version 1.5.3

  • extension compatibility – mininova menu, forecastfox, wellrounded, search bar style extensions
  • download manager visibility issues
  • menulist and searchbar fixes
  • help toolbar fixed
  • chevron color change
  • tab loading throbber color change

Version 1.5.2

  • numerous changes for compatibility with extensions
  • improves menulist borders
  • fixes searchbox for OSX users

Version 1.5.1

  • improves visibility for fonts and icons and fixes glitches with menulists

Version 1.5.0

  • PitchDark has been approved!
  • Update for Firefox 1.5
  • minor visibility improvements

Version 1.0

  • Original port from Phoenity Dark for Phoenix/Firebird(Pre-Firefox 0.7)


Version 4.0.4

  • Fix for dropdown menus
  • Regression fix for attachment list color

Version 4.0.3

  • Fix for addons page
  • Improved contrast for focused elements (buttons/menulists;)
  • Small bug fixes

Version 4.0.2

  • Bugfix for smileys
  • Fix for icons on about:Add-ons page (extensions, appearance, plugins, language)
  • Fix for button appearance on headers

Version 4.0.1

  • Bug fix for attachment list color

Version 4.0.0

  • Full theme update for compatibility with TB 5.0+ and Lightning 1.0+

Version 3.1.1

  • Fix for find button styling and toolbar (Ctrl-F)/colors on quick filter bar
  • Fix for Manage Identities and Config buttons being hidden in the account settings
  • Minor visual changes

Version 3.1.0

  • Updates for full compatibility with TB 3.1 and Lightning 1.0b2 (including tabbar icons)
  • Change Chrome registration (rdf to chrome.manifest)
  • Moved extensions chrome up to xpi_skins folder
  • Additional minor color adjustments
  • Image optimization to improve theme size

Version 3.0.0

  • Thunderbird 3.0 compatibility
  • Significant number of updates for tabbed messages and other changes
  • Visibility improvements via color fixes for many icons on compose screen and message list
  • Various other bug fixes/color modifications
  • Addon fixes
    • MR Tech Toolkit
    • Facebook Toolbar
    • Google Toolbar (v6)
    • Live Http Headers
    • ReminderFox
    • Update Notifier

Version 2.0.3

  • Lightning Compatibility
  • Visibility improvements via color fixes for many icons on compose screen and message list
  • Returned to default error console icon set
  • Various other bug fixes/color modifications

Version 2.0.2

  • Fixed header background color bug
  • Re-added collapse-able header functionality
  • Fixed background color on address book cards
  • Fixed throbber code
  • Re-added text only and icon only options in customize toolbar window

Version 2.0.1

  • code trims
  • bug/error fixes

Version 2.0.0

  • full sync to TB2.0 default theme code
  • more visibility improvements
  • code trims

Version 1.5.6

  • fixed annoying pixel jump in toolbarbuttons (caused by disabled buttons having borders)
  • Console spacing changes
  • visibility improvements for small column icons

Version 1.5.5

  • icons are default/phoenity for now
  • more small changes all around
  • fixed group by sort headers

Version 1.5.4 – DROPPED

  • ported from firefox
  • fixed all major visibility issues
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246 thoughts on “PitchDark

  1. I love this skin. I was using an old one on my old, not-upgraded Thunderbird for the last oh, decade probably. Thank you for many years of not even having to think about it. Thanks to my Inbox and Trash vanishing too many times, I’ve finally upgraded to a newer version, but there’s a glass ceiling thanks to this theme.

    I’ll be happy to donate $10 if you update for the latest Thunderbird, and I’d make it $20 if you take away the oddly light color for the Quick Filter bar, and the unnecessarily shiny shading on the tabs! They both attract the eye too much, IMO.

  2. I’ve finally and reluctantly upgraded to Firefox 24. Until PitchDark is compatible, I’m afraid I’ve defected to In The Dark (which has many good points).

  3. Correction:
    The URL bar problem remains (you can’t overtype in the URL bar, refresh etc. doesn’t work) but I’ve found a keystroke workaround for my biggest bugbear—the impossibility of selecting and copying a URL—by typing *cmd L* (I’m using a Mac) which selects the URL and then copying it.

  4. I have been refusing to upgrade to Firefox 22.0 as PitchDark for FX 4.0.9 was not compatible. Opening Firefox this evening, I spotted it was performing a ‘checking add-ons for compatibility’ exercise. To my surprise—and delight—I have been upgraded to Firefox 22 and PitchDark for FX 4.0.10 is enabled. Thanks Tim!

    The URL bar problem remains (you can’t overtype in the URL bar, refresh etc. doesn’t work) but I’ve found a keystroke workaround for my biggest bugbear—the impossibility of selecting and copying a URL—by typing (I’m using a Mac) which selects the URL and then copying it. Job done!

  5. There are other themes that do not turn unusable after every ff or tb update. Seems that there exists some programming trick to at least keep them alive, until final adaptions can be made.
    E.g. “FT DeepDark” seems to be such an Theme.
    TB still not out (that’s the one I’m waitinig for most urgently)


  6. Hey Tim

    I am using Windows XP.Moreover i would like to mention that when i enable PitchDark now the “style” of the tabs,url bar changes like that of Lock the Taskbar function in Windows and i am not able to type anything in the urlbar.I did not update anything and still i am getting this problem STRANGE eh

  7. Hi Tim, Thanks for your prompt reply.

    I have tried disabling each and every extension one by one to no effect. Ditto with each and every Plugin. Finally I was running Firefox entirely naked with no extensions and no plugins with just PitchDark enabled, and the problem remained.

    Himanshu (below) seems to have the same issue. He refers to ‘starting my pc’ but I suppose it could be a Mac.

    To clarify, everything works okay with a new tab, but once you’ve opened a web page you can’t overtype in the URL bar. In fact nothing works in the URL bar.

    I will stay with PitchDark because it’s far and away the most elegant and legible of the dark themes and the next best (Office Black) is no longer compatible. There is a partial workaround—opening a new tab—though the inability to refresh is a nuisance.

    It would be great if this bug could be fixed.

    Thanks for all your hard work and for devising such a great theme!

  8. I was delighted to get PitchDark back. I was resisting updating to Firefox 21 as it meant losing Office Black (the next best dark theme) which is not compatible and is no longer being maintained and updated.

    I have now updated to Firefox 21 and I too have a problem with the URL bar on PitchDark. Everything works okay with a new tab, but once you’ve opened a web page you can’t overtype in the URL bar, and refresh doesn’t work (even on pages that are updated like BBC Weather for example). Perhaps this is only a problem with Firefox 21 and it was okay with Firefox 20, I don’t know.

    I am using Firefox 21 on a Mac OSX 10.6.8 (Snow Leopard) with the following extensions: AdBlock Plus, CoolPreviews, InstantFox, OmniBar, Stylish, Tab Mix Plus.
    Hope this is helpful….

    1. Hi Tim, Is there any chance it could be an incompatibility with OmniBar or another extension? I cannot seem to replicate the issue (but I also don’t have a Mac).

  9. This is the greatest ever dark theme for firefox,i am using it since the past many many years with no problems at all BUT since last night as long as this theme is enabled in my firefox i am not able to write anything in the url bar.I came back home last night started my pc and this problem was there.I reinstalled firefox added addons one by one and the problem started as soon as i installed this theme.When i disable it the problem goes away.I am only using a total of 4 plugins/addons including this theme and i have been using them from the past many many years.Firefox version 10.0.2

    What to do now?


  10. I use PitchDark for TB with TB17. There are some problems displaying the title bar (I had to set mail.tabs.drawInTitlebar=false in TB config). Anyway this is my favourite TB dark theme. Great Job!

  11. Any chance of PitchDark for Firefox 20? I really miss it. I’m using LCARStrek and I’m not a trekkie! It’s hideous, pretentious and turquoise/orange, but extremely legible unlike other all other dark themes. Help!

  12. Is there any chance to get pitchdark working for present thunderbird-versions?
    I would easily consider to make a donation for that!

    Or did you quit working on it completetly?

    1. @Andrej – I’m still working on the updated version for Thunderbird. There are a few bugs to fix for Lightning before I can release it.

  13. I sure miss PitchDark now that Firefox 18 is out. I think it quit working around Firefox 14. I keep trying to find one that I like as well as this, but still haven’t. I’m using one called DeepDark, but it’s certainly not PitchDark. I keep checking back weekly in hopes that it will say COMPATIBLE again!

  14. PitchDark was my FAVORITE theme for Firefox. It’s been “dead” now since Firefox 14. I’m now on 18, and they’ve been changing so often. I keep checking and HOPING there might be a new version out. It’s the greatest theme out there. I’m using one called DeepDark, but it’s not as good as PitchDark!

  15. Please get PitchDark updated for Firefox! It’s my favorite theme and it’s incompatable! I have yet to find another theme I like as much as I like this one!

  16. This is my favorite theme! Please update it! It’s incompatible with the new Firefox and I would LOVE to use it again!

  17. Love Pitchdark but have just updated to TB15 and it isn’t available as yet for that version. Hope it appears soon as I am getting blinded by the standard interface

  18. Oh dear! Just as I thank you for updating PitchDark for Firefox 13, along comes Firefox 14. Another update ASAP please!

  19. I’m really pleased you’ve updated PitchDark for Firefox 13. It’s my favourite theme by far for functionality, clarity and visibility.

    But … could you PLEASE make the back and forward arrows more visible—more like the refresh button, perhaps. I’m not the first to make this point:

    joshua on January 2, 2012
    This looks really good as far as I’m concerned. The only thing you need is the back and forward arrows and the home symbol. As of right now they are just grey with nothing in them.

    It’s the thing that undermines your claim that PitchDark is ‘designed with visibility in mind’.

    Thanks anyway.

    1. All of the buttons have the same basic grey-blue background (following the default theme). I can try to work on the icon coloring a bit for the next release.

  20. I’ve been using Firefox & Thunderbird ESR and have had absolutely NO problems with PD or any other extension. I suggest you try them instead of the regular release versions of FF & TB.
    Thanks for all of your work, Tim.

  21. It must be nearly impossible to keep up with Mozilla updates but I do appreciate your efforts.
    I’ve been using PitchDark in Firefox and, most importantly, Thunderbird for years. I have low vision and your themes are the best for me.

    Thanks again.

    1. Glad you find them helpful. You are spot on with trying to keep up with the release schedule – it’s gotten bad since Mozilla went to rapid release.

  22. Hi Tim.
    Firefox and Thunderbird 12 are out.
    Now ones again your theme need to be, made compatible.
    So please update your great themes.
    Thank you for your great work.
    Kind regards

  23. Hi!

    Problem for to display the personal bar with Firefox 12 Beta… 🙁 This problem appears only on the version 12… Have you a solution or an update please ? 😉


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