[kingbirdy]

Personally I find that trying to work at 3am is a bad idea. The backlighting (no matter how much blue-light filtering you have) will wake you up, and even if you solve the problems that are keeping you awake now, you're almost guaranteed to get back in bed with new ones to be thinking about.

[WalterSear]

Fwiw, I put my screen in darkroom mode and use nothing red bulbs in my evening lights.

It's very easy to avoid bluelight while you work. However, as you mention, that's only half the battle.

[xvector]

My issue with this is that warm light encourages melatonin production so I end up dozing whenever I have red light or f.lux/Night Shift/etc on.

[WalterSear]

It doesn't.

I'd hazard you are sleep deprived.

[hinkley]

Nobody ever made a good decision at 3:00 am. Keep away from the codebase please.