The 1.2 version of Colorum for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac application was originally designed by Team Wilk AB. The software is categorized as Internet & Network Tools. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
Colorum is a simple extension that let you overrule the colors used on a web page and instead pick a color combination from a collection of predefined themes. The original color themes are 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.
You may want to check out more software for Mac, such as Cooliris Widget, VisComPic or Mars, which might be related to Colorum.