Dark Background and Light Text is a Firefox extension designed to enhance web page readability by applying a customizable dark mode. This personalization tool allows users to easily switch the appearance of web pages to a dark background with light text, making it suitable for various lighting conditions and user preferences. Accessing the controls is straightforward, with a dedicated button in the toolbar menu that provides options to adjust the display settings on any visited site.

The extension is subscription-based and focuses on providing users with a seamless browsing experience. It is particularly useful for those who spend long hours reading content online and prefer a more comfortable visual setting. Users can also submit bug reports or feature requests via email or GitHub, ensuring continuous improvement of the tool based on user feedback.