Interesting. You've got me wondering whether it would be feasible and useful to hook up all lights in the room and adjust their brightness and colour temperature as the day progresses.
Already implemented with Phillips hue as well as xiaomi yee lights. Probably with others as well, they're the only ones in certain about though.
Not heard of yee and will investigate, thanks! I really dislike hue. Their lights are pretty inefficient (compared to dumb leds) and rely on zigbee and a wifi bridge. Would much rather have something like this using PoE lights. But I suppose this is a good start.
A little off topic at this point, but just as a note: there yeelights are cloud enabled by default.
You need to enable developer mode to control them directly.
You'll still need some kind of bridge though. It doesn't need to be the original: A raspberry pi is sufficient
Home Assistant has a built-in Flux feature. I use it to control Ikea Trådfri lights.