Extended Color Management is a Firefox extension designed for web development that addresses color display issues in applications like image and video creation, particularly on macOS. By enabling color pass-through, users can ensure that images and videos are displayed without any modifications by Firefox or the operating system. This feature is crucial for professionals who rely on accurate color representation in their work.

The extension requires access to data for all websites to implement necessary JavaScript, allowing websites to recognize the extension's presence. Users can review the code added by the extension for transparency. This subscription-based tool is particularly beneficial for developers and IT professionals who need precise color management in their web applications.