Illumify

Illumify visualization tool enables night mode creating dark themes and themes featuring color blind correction. Illumify inverts bright colors giving them more contrast and making them easier to see.

You can adjust brightness, contrast, sepia filter, dark mode, font settings, text size, as well as change various color blind options.

Color blind options include: changing link colors for visited and uninvited sites, having color values display via text popup when hovering the mouse over the web page, and a color blind correction filter that adjusts based on the type of color blindness and the sensitivity of an individual. While these features are all working, they are still under development and may behave strangely.

Illumify is a fork of Dark Reader. It does not show ads and does not send user's data anywhere. It will be fully open-source in the near future.
https://github.com/darkreader/darkreader
https://github.com/agatt1/Illumify
App feedback can be given here: https://marquette.az1.qualtrics.com/jfe/form/SV_9ZaufkfIR6luDSR