I reliably get restless leg syndrome when there is a blue LED left on in an adjacent room with its light leaking in to my bedroom. Other triggers: too much caff

I reliably get restless leg syndrome when there is a blue LED left on in an adjacent room with its light leaking in to my bedroom. Other triggers: too much caffeine late in the day and dehydration. The yellow LEDs in the room don't bother me when I forget to turn the device off. And the red clock projected onto my ceiling doesn't bother me either. I used to sleep fine with blue LEDs though, so maybe it's just different for different people, ages, environments, and/or other factors.