The good thing about Firefox Proton UI is that a dark theme is also available for Firefox About Pages and Text Document out of the box. On the same page, Firefox also suggests various themes that you can try. This will automatically enable the System theme, it respects the Windows OS settings for buttons, menu, and window.ĭisabling the dark theme for Firefox means that you want to enable either Firefox light theme or Firefox Aplenglow theme.Īpart from that, you will find following themes too:įirefox Light – Light theme with light color schemeįirefox Aplenglow – Apply colorful appearance for button, menu and window. You just need to click on the Disable button at the same location. In case, you want to disable (Proton) Dark theme in Firefox, then the process is the same. Doing this will instantly enable the Dark theme. This works on Windows 7, Windows 10, Windows 11, macOS, and Linux. But you can manually enable dark mode in Firefox, on any operating system, and without installing any third-party themes. Here on this page, head over to Disabled sections and look for Dark theme and then click on the Enable button. Firefox has respected Windows 10’s dark mode setting for a while now.

Firefox dark mode