Originally Posted by
agg_karan
Unfortunately 777 OFCR certifications (and assuming 787 as well) require display of lights warning signs etc so while one would need a truly dark environment to sleep, it will never be a reality.
Yep, sorry but the lights are a regulatory requirement. You can't blame Boeing (or Airbus) for that.
I wonder if they could get away with a 'dimmer switch' arrangement, with some safety override that automatically restored full bright below a certain altitude?