Yes, there is some really interesting research on this topic. It turns out that if blue light centered around 490nm is an order of magnitude more effective at

Yes, there is some really interesting research on this topic. It turns out that if blue light centered around 490nm is an order of magnitude more effective at treating SAD. https://www.innerscene.com/papers/lux-vs-wavelength-in-light-treatment-of-seasonal-affective-disorder https://www.innerscene.com/papers/lux-vs-wavelength-in-light... Because we recreate the blue sky there is a lot of light in this spectrum