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Customize Firefox Developer dev tools color theme


Just as title says, I'd like to know if it's possible to change the color theme of Firefox Developer dev tools. Light and dark theme are nice, but I'd like to use a code color theme like Monokai or something similar, how can I do that?

Below you can see the current dark theme in the dev tools:

[firefox dark theme screenshot [1]


Solution

  • I found the answer to this in the Mozilla support forum and basically you have to modify the css style creating an overriding chrome stylesheet.

    You would have to write your own style rules and apply them via userChrome.css or Stylish. Use the !important flag to override existing style rules.

    https://developer.mozilla.org/en-US/docs/Web/CSS/Specificity#The_!important_exception

    The customization files userChrome.css (user interface) and userContent.css (websites) are located in the chrome folder in the Firefox profile folder.

    http://kb.mozillazine.org/Editing_configuration