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Hi - I love the themes available in Firefox. However, some themes I use change my Bookmarks section to "dark". I assume that is by design. However, is there any setting in themes that will enable the Bookmarks section to stay on a light setting? If not, may I please submit this as feedback for a future suggestion? Also, the themes affect the look of part of the new sidebar. I would also like to submit as feedback this issue. Thanks in advance for any help!

Hi everyone, I'm Ekin. Firefox is by far my favorite browser, and I proudly use it accros all of my devices. However, the lack of support for theme extensions on Android- especially on tablets- is a really frustrating limitation for me and many other mobile users. The standart UI can feel a bit plain on larger tablet screens. I would highly appreciate it if you could consider bringing full theme and extension support to the Android version. Specifically, having the ability to use animated themes and tab customizations (like the classic Nyan Cat theme) would make the mobile experience incredibly fun and and dynamic. Thank you for your hard work, and I hope to see this feature in the future updates. Best regards, Ekin

Hi I am a theme girl and have tried many over time. I had never used the Dynamic Theme which is supposed to change from day to night along with what it's doing outside. It was kind of bland (sorry to the creator) so I tried to change it to another one and it worked just fine. When I came back to my computer it had changed back to the Dynamic one again. Again I changed it then it was back again. Yesterday I actually removed it from my list of addons and now it's back again. How do I stop it? Thanks for any help. ♥

Thanks

Moderator note: Moved to the Thunderbird Desktop forum from the Firefox Desktop forum.

Your themes aren't working right and for some reason the bookmarks sidebar has gone dark, and MY theme which I created is no longer available. The toolbar up top loses the icons for back space, forward, home, and refresh and I constantly have to re enable the theme to make them reappear. This is getting tiresome and needs fixing.

I am running the latest Firefox [v. 150.0.1 (64-bit)] on Windows 11. --- Earlier today, Firefox told me that I needed to restart my computer, so I did. After the restart, my star field theme (may not be correct name) is blinking and my laptop is running considerably slower. Thought maybe I needed to reboot completely but it is still blinking on and off and my laptop is still running slowly. Why and what do I do about it? --- TIA, KBo

Hello

After update to FF 150.0 I have an issue I can't solve myself. My old theme that I was using for many, many years changed colours, because now frame colour corresponds to whatever FF uses dark theme or light theme for some panels like bookmarks, bookmarks editor e.t.c ( I assume it). So if frame is dark all other elements switch to dark mode. I`m looking for a way to change it back to how it was before FF 150.0, meaning if frame is dark I want all rest element of FF to become light themed. For instance: in manifest.json if "frame": "rgb(31, 34, 60)", everything else turn dark if "frame": "rgb(131, 134, 160)", everything else turns light Default themes won't work for me ( v.bad eyesight ) Is there any entry I can add to manifest.json to get what I want? I mean: if "frame": "rgb(31, 34, 60)", I need everything to use LIGHT themed colours.

An Add-on (a theme) I've been using, Graphite Grace by compilan, has been removed with the following message:

"This add-on is blocked for violating Mozzila's policies and has been disabled".

As a user, I feel I have the right to know what policies were violated, and whether the add-on was indeed malicious as well as what data may have been compromised. Where can I get that information?

Hi! I updated my browser and ever since then I can't re-enable any of my themes. Even when they say "Enabled", nothing happens. The only ones that work are the light and dark theme as well as another one of the Firefox themes. I tried going on the users' pages and downloading them again, and also tried downloading new ones. Neither of these things worked. I am basically just asking how to re-enable my themes and extensions so that I can customize my browser. Thank you! :)

Добрый день(или другое время суток)! Я столкнулся с такой проблемой, когда захотел изменить темы на телефонной версии firefox на более красивые, заметил что данная функция ещё не сделана. Планируется ли создание такой персонализации как на ПК? Если вы не планируете заниматься этим обновлением то пожалуйста напишите, чтобы я его не ждал. Благодарю за понимание!

I have three laptops which are synced. One function I do not want to sync is my individual selection of themes. Every time I change the theme on one, the other two go blank. In my sync settings I sync Settings and Add-ons. Do I need to disable one of these to correct the ongoing problem?

I have a custom theme enabled on my browser. Every time I log into Firefox on a shared university computer my theme is turned off for that desktop aswell as my personal laptop. I have to manually enable it on my personal devises again each time after using school computers. Is there a way to prevent this?

I have installed an animated theme for my home page a while back, but recently if I minimize firefox the memory usage increases until it freezes my pc completely. I know this issue has been reported as Bug 1828587 2 years ago and it is said that it is fixed, but here I am experiencing the same thing. I would appreciate any help since I am not that good at coding a css file. Here is my userContent.css code if maybe i set something up wrong:

@-moz-document url("about:newtab"), url("about:home"), url(about:privatebrowsing) {

   /* Sets background image and autoscale image to browser window. */
   body {
       background-image: url("wallpapers/wallpaper.avif") !important;
       background-size: cover !important;
       background-repeat: no-repeat !important;
       background-attachment: fixed !important;
       background-position-x: center !important;
       background-position-y: bottom !important;
   }

   @-moz-document url("about:newtab"), url("about:home") {
       .top-site-outer .title {
           color: white !important;
       }

       .logo-and-wordmark .wordmark {
           fill: white !important;
           color: #00aaff !important; /* fallback for text */
       }

       .context-menu-button.icon {
           fill: white !important; /* for SVG-based icons */
           color: white !important; /* for any text-based fallback */
           opacity: 1 !important; /* ensure visible even when normally dimmed */
       }
   }

The second part is to make some of the text on my homepage white so it is visible.

As above themes not working on latest version of firefox difficulty reading menu & tabs bar as light blue needs to be dark coloured

Also have difficulty reading your website because of white background will not work on dark mode retinopathy burn

As of 12/9/25, Firefox seems to now prevent Theme add-ons from working if there is a contrast setting configured in Windows configuration. (Version 146.0) Previously, this allowed a very aesthetically pleasing view. I would greatly enjoy having that option again. Thank you.