When I was younger, I used to read and type at the screen at night times. But that faded out. So I prefer the white background. But I dim the brightness when I watch movies late night, for I might fall asleep and then it disturbs me.

Fetishes, HaHa! I can't think of having one but you never know ;)

"Zotero" I never heard of. Might try it out, thanx. Mostly, when I researched for educated articles I used keywords with "pdf" added to them.

Sleep well!