Black Light: FAQ

Answers to frequently asked questions about Black Light. If your question is not answered here or you experience problems, please get in touch or .


Colors get reset temporarily after certain events

This can happen when another app fiddles with the gamma curve or when the system resets it after some event (plugging a new display for instance). Black Light will reapply its effect, but you will see normal colors with no effect for a few seconds.

If this bothers you, you can use Black Light Pro instead. It applies its effect on the color profile directly and this generally avoids such issues.

Two effects on two screens

You can choose the screen(s) Black Light applies its effect to, but Black Light is limited to one effect at a time. Try Black Light Pro if you need two different effects at the same time.


  • © 2003–2018 Michel Fortin.