[webmobdev]

> A blue light tells our brain "we're in the morning, wake up up!" while a soft yellowish light tells the opposite "slow down, dusk is coming".

I have no idea where you live, but in my sunny location the sunlight streaming through my window that wakes me up every morning is overpowering yellow. I associate "bluish" with darkness rather because evenings do become "bluer" before becoming dark. In fact, I have a colour changing LED bulb in my room, and I switch to yellow lights if I want to work longer at night - I find it more soothing on the eye, while it helps me be more "awake". The whitish / blueish light of the LED actually makes me feel drowsy.

On computer screens, I find that whitish / blueish light strain my eyes more, and thus apps like Flux - that change the display to a more yellowish tint - is more soothing and less stressful on the eyes.