I'm from Europe too. Blue(ish) is daylight colour while red(ish) is night colour. Staring at blue light hinders melatonine production, affecting the sleep cycle

I'm from Europe too. Blue(ish) is daylight colour while red(ish) is night colour. Staring at blue light hinders melatonine production, affecting the sleep cycle. Hence the existence of products like Redshift [0] and Twighlight [1]. Increasingly, this is built into visual interfaces, both my Gnome and Android have things called "night light" or something similar. [0]: http://jonls.dk/redshift/ http://jonls.dk/redshift/ [1]: https://play.google.com/store/apps/details?id=com.urbandroid.lux https://play.google.com/store/apps/details?id=com.urbandroid...