Thanks for the info, I’ll look into it because that would be the best solution.
I’ve already found something generic here:
And something more specific there:
I need to do the same on my end because I had a power outage in the middle of the night and, on top of that, some lights came on when the electricity returned.
I’ll have to fine-tune the settings.
You should set « previous » as the default mode for the bulbs in case of a power cut! 
Yes, I saw it on your latest YouTube video, I didn’t know.