Colorzilla for Firefox. Important - new version 3 Due to new Firefox add-on developer requirements and restrictions requiring all future add-on development to be done using WebExtensions technologies, ColorZilla for Firefox has been re-written from the ground up to comply with the new requirements.
This new version retains all the functionality, but there might be minor UI/UX and other differences. Your history and favorites palettes should be backed up under <Firefox Profile Folder>/colorzilla after the update. ColorZilla v3.3 has many improvements and fixes. Free tools for working with digital colors. ColourGrab.com - Colouring The World. Check My Colours - Analyse the color contrast of your web pages. Color Scheme Designer 3. Code couleur.