How do you change your screen's color temperature?
Solution 1:
redshift -O 5000 works for instantly turning on warm mode instead of messing with location data
Solution 2:
Redshift adjusts the color temperature of your screen according to your surroundings. This may help your eyes hurt less if you are working in front of the screen at night.
I'm not sure if this is what you need because, as far as I know, it won't let you adjust the colour temperature manually. It may help though, so Here's the website anyway.