I've got this set up in home assistant, with smart bulbs that don't access the internet at all. Its really nice, goes from an orange red in the morning to full white back to orange red. Eventually will get all of the bulbs in my house set up with it but for now I have it only in my room

Automation: https://github.com/basnijholt/adaptive-lighting Bulbs: https://kaufha.com/blf10/

I've got smart shutters that open and close automatically based on time, smart awnings which lower or raise based on the sun, to allow air flow when the shade isn't needed, smart lights that can be turned off all together with a button near my door when I leave, movement sensors in a few rooms that turn on the light but only at certain times of the day (essentially I don't want my corridor light to flash me when I go to the bathroom during the night), energy meters and smart plugs that allow me to optimize my electricity costs.

It's not for everyone but it's quite useful.