@a.tibi - I use addressable LED Strips (WS2812) in each window/door sill, with NodeMCU controllers. The controllers all listen to the same MQTT topic so all effect/brightness/speed changes are synchronized, but I can also control each strip individually. Check out my write-up/videos if you want to see how it looks/works.
I use these mostly for holiday lighting, but I’ve thought about setting them up as standard accent lighting (definitely liking @OMR 's Astro-driven setup!)