Well, they are "kind of working"
Meaning, that you can set a day color, and a night color. By returning to the screen, you can click on load day and load night to recall them.
What is not completed, is for this to be automatic. I have a script that will get your sun rise and set times from your GPS location. All that is left is for a way to trigger when this time occurs, without a script running 100% of the time to just look at the time.