I had a nice little Python hack that would watch the weather and set the color of a light in the foyer based on the weather, and override that with a dim red at night because I really did not want a bright blue light when I got up late on a rainy night. I never set up the lights after moving across the country so it’s been dormant.

(There are services out there that can set the color of a light based on the weather, OR on the time, but I’ve never found anything that can do both.)