[odiroot]

Living in a place with frequent changes between sunny / cloudy weather I've always wanted something like that for my Plasma setup.

Wluma sort of answers that question but I have my cameras always covered for privacy so I couldn't really use it. Tried to experiment with an external (Zigbee-connected) luminance sensor but never managed to get it well.

Ended up writing a Plasma tray applet for quickly switching between "sun mode" and "clouds mode" with a single click (and adjusting both built-in and external display at once). Sometimes this is a saner option than "UX uncanny valley" automation.