Saw a new app that minimizes blue light on Ghacks today.
Gammy
https://getgammy.com/index.html
Settings save in the application's directory. Haven't tested for stealth.
Uncompressed filesize is 51.5MB. Memory usage is around 15-20MB.
Nice little window to control the brightness and color temperature, but lacks hotkey support that SunsetScreen and f.lux have.
Going to stick with the last ad-free version of SunsetScreen for now.
Also I wanted to note that I bought some glasses to block blue light. They help and not just for the computer, but also while watching TV or while you're on your mobile device.