The sum of all physiological knowledge will end with watering plants with Brawndo because electrolytes.
I've heard that, but I still think the amber light is disgusting and gross, I'm not buying a device that only has that.
I even recently broke my old Kindle, I'd already heard of daylight computer tablets but the amber light was a main factor and why I just bought another Kindle. I would like high FPS and fully unlocked Android, but all I really needed was some way to read a bunch of digital books. The new Kindle also has an Amber mode, but I keep it off I like the blue light I think green would be better) fall asleep reading just fine.
We went from "avoid blue light after sundown to help keep your natural circadian rhythm" to "blue light bad! Buy this product!"
Now we're too far down that path with customers specifically avoiding devices that give off blue light whether or not they understand why. Companies like that are just taking the safe bet by avoiding blue light