Blue light filter similar to f.lux

I use f.lux when I work/game at night. I've noticed a few games override it, especially games that run in fullscreen mode.

I messed around with the ColorMatrix shader to recreate the f.lux effect for such games.

For Matrix Red, set the R value to 1. The G and B values should be at 0.
For Matrix Green, set the G channel to .855. Ditto for the R and B values.
For Matrix Blue, set the B channel to .725. DItto for the R and G values.

This sets the white point to a color that approximates white under f.lux.

Works for me, but if someone finds a more accurate RGB value or indeed an entirely different ReShade equivalent for f.lux, feel free to share.

LUT shader should be able to do that. Just grab a neutral LUT and change its white point in Photoshop or similar software, that should do.