See this Gnome Extension and this repository on GitHub

What?

The extension will disable Night Light for 10 seconds in the Gnome desktop environment.

Why would you want to do such a thing?

A small pause will enable you to scan those color-codes on your screen with the scanner from your bank.

It will automatically turn Night Light back on again so you don’t have to remember to.

An alternative

I also made a shell script that does the same thing:

#!/bin/sh
gsettings set org.gnome.settings-daemon.plugins.color night-light-enabled false
sleep 10
gsettings set org.gnome.settings-daemon.plugins.color night-light-enabled true

(If you don’t know what to do with this; don’t worry about it, this isn’t meant for you. )