I was always trying with that one sensor (sensor.dark_sky_summary) and that won’t work. For some reason I have never checked the small icons from the 4 other sensors.
The four small icons (sensor.dark_sky_humidity, dark_sky_pressure, etc… ) indeed does change with your solution. Thank you.
Just that one still won’t change. Maybe cause that’s not a static icon, but change with the weather? I’m not sure…
Edit: I thought I could fix this byu using another entity (weather.huis), but that is just a static icon, won’t change with the weather. Still looking for a solution to get that one sensor in another color as black.