This is an option right below the Hue setting called "Allow f.lux to keep this computer awake to adjust lights." You are welcome to turn it off, but it won't work as well.

Also, we do this only when the computer is plugged in (or has a nearly-full battery).

Cid,

I've thrown together this guide on how to use f.lux with Node-RED to control Alexa powered lights.

Any feedback would be appreciated!