Please do not stress yourself about it.
I have lived with clinical lights in the kitchen for about two months now, since I got time to investigate. There is no need to hurry now.
I will send you my mail, just in case - and yes german is fine, since its my native 
New test version 1.16.0
If the HA light entity supports kelvin values (min_color_temp_kelvin, max_color_temp_kelvin), this range and color_temp_kelvin attribute is used. Else mired values are used (min_mireds, max_mireds, color_temp).
I think all light entities should use both until HA 2026.02 and only Kelvin from 2026.03.
@lukenukemmp3 FYI and test 
This works smoothly like a charm!
Another thing, that I can’t get my head around: everytime I change the temperature, the multiple choice circle switches instantly back to RGB - is there some way, to get it to stay on temperature, until - like Sean Paul would say - I get the right temperature?
And does it has to be the multiple choice circle
or could it be a slider?
Thank you again and again and again!
