Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Prohledat stránky podpory

Vyhněte se podvodům. Za účelem poskytnutí podpory vás nikdy nežádáme, abyste zavolali nebo poslali SMS na nějaké telefonní číslo nebo abyste sdělili své osobní údaje. Jakékoliv podezřelé chování nám prosím nahlaste pomocí odkazu „Nahlásit zneužití“.

Learn More

Firefox suddenly no colors in style rendering

  • 3 odpovědi
  • 2 mají tento problém
  • 11 zobrazení
  • Poslední odpověď od cor-el

more options

I'm using Firefox on Mac OS Big Sur Mac Mini 2018. The version number is 91. Suddenly, I guess after an update, all the colors are gone from all the webpages I visit. I added images showing the different between Firefox and Chrome on StackOverflow. The pages should look the same since I have dark theme enabled for StackOverflow.

I have tried deleting FireFox from Applications, then downloading and re-installing it. The issue persists.

What is going on, and how can I fix it. Thanks!

I'm using Firefox on Mac OS Big Sur Mac Mini 2018. The version number is 91. Suddenly, I guess after an update, all the colors are gone from all the webpages I visit. I added images showing the different between Firefox and Chrome on StackOverflow. The pages should look the same since I have dark theme enabled for StackOverflow. I have tried deleting FireFox from Applications, then downloading and re-installing it. The issue persists. What is going on, and how can I fix it. Thanks!
Přiložené obrázky

Zvolené řešení

This could be a problem with High Contrast Mode on Mac.

See "New" in the release notes.

Firefox now automatically enables High Contrast Mode when "Increase Contrast" is checked on MacOS in the Accessibility settings.


Make sure you allow pages to choose their own colors.

  • Settings -> General: Fonts & Colors -> Colors: "Override the colors specified by the page with my selections above"

Try "Never" if the default "Only with High Contrast themes" isn't working.

Přečíst dotaz v kontextu 👍 0

Všechny odpovědi (3)

more options

Zvolené řešení

This could be a problem with High Contrast Mode on Mac.

See "New" in the release notes.

Firefox now automatically enables High Contrast Mode when "Increase Contrast" is checked on MacOS in the Accessibility settings.


Make sure you allow pages to choose their own colors.

  • Settings -> General: Fonts & Colors -> Colors: "Override the colors specified by the page with my selections above"

Try "Never" if the default "Only with High Contrast themes" isn't working.

more options

Also, here is a screen shot of the Settings, they also not displaying properly

more options

Did you make the changes I posted above ? You likely need to close (Quit) and restart Firefox.


In Firefox 91+ you can no longer disable Proton and revert changes that come with this design via "browser.proton.enabled = false" on the about:config page. Best in Firefox 91+ is to set browser.proton.enabled at its default value true as the false setting can cause issues.