The LED idea is awesome - it saves you a zillion $$ in the long run - but as I recall researching, the intial cost can be as high as 20x.
As noted, the problem with LED light is the limited spectra of emission - the limited range of colours that the LEDs give off.
What follows is a hypothesis of mine which I am currently researching: Limited visible spectra in the workplace / living space of humans is a leading cause of migraine headaches. The null hypothesis of course is that migraine headaces occur in frequency which is independant of lighting environment.
Have you ever noticed a change in your overall demeanour or "mental health" when you have been stuck in artificial lighting for long periods? In particular flourescent lighting?
The sun gives off (as best we can tell) the entire spectra of EM radiation - which means all possible "shades" of the colours. I have a feeling that as we expose ourselves to limited lighting, we are affected physiologically. This is akin to seasonal variation disorder in my mind.
When I have enough replication to validate my initial findings, I'll certainly let you know. In the mean time, care to be part of a control group?
