Startup Idea: Desktop Software for Screen Light Intensity Customization

Startup idea to develop a desktop application that adjusts the monitor light intensity and color hues, helping users to comfortably read documents without straining their eyes and causing headaches. User customization for brightness and color hues should be a key feature.

I work in a company were I have to read a lot of documents in my computer, after some time I begin to suffer from headaches due to the intensity of the light from the monitor, I have tried to lower the brigthness settings, but that makes it dificult to read (I use glasses), I have an app in my phone that allows to put some color hue and helps me to read. I havent find anything like that for my desktop or laptop. I such app existed I would purchase it right away.