It is not "demonic possession" or "teenage hormones" that causes teenagers to become resistant to falling asleep at night, sleeping in late or dragging in the morning. The fault lies in the light hygiene habits that are practised in the household the night before.
And to make things even worse, the alerting effects of LED lighting will eventually be employed in your son's or daughter's school, which will only serve to aggravate school behavioral problems in teenagers who practise poor light hygiene habits the evening before.
I highly recommended printing out this research paper and giving it to everyone you care about.