Colorum 4+

Colorum is a simple extension that let you overrule the colors used on a webpage and instead pick a color combination from a collection of predefined themes. Original color themes: Dusk, Night, Dawn and Noon.

The themes can also be activated by the contextual pop-up menu, reachable by ctrl-click on mouse button or ”right-click”.

Colorum supports Mojave's and Catalina's Dark Mode.

Choosen theme can also be deactivated without reloading the webpage.

Do not hesitate to visit our support page if you would like to see a special color theme or have ideas of new functionality!


Known limitations: activated theme is global and will be activated in any new window/tab and in old windows as well next time the page in that window is reloaded.