Downgrade core on HA OS

Are you referring to the ESPHome configuration above? could you give me an example of the context how to add the code. I’m having trouble following your instructions. thanks for jumping in to help me btw. I’m pretty sure you are on the right track. I have spent many hours staring at this code and looking at the ESPHome website to look for clues to missing variables that were getting auto translated by HA before the recent updates.

No, edit the Blueprint - remove mireds and add in hs_color, or white_value & brightness values. Test to see what works.