There are a lot of people here at work who use custom color schemes on their computers instead of the standard white background with black text. Black & white is harsh on your eyes and IIRC, a blue background with yellow text is one of the easiest on your eyes to use. I question some of the one’s I see around here – sage background with orange text – but only from an aesthetics point of view.
However, there’s this one guy downstairs who uses a bright red background and yellow text. It looks like this
I cannot, for the life of me, imagine working on that all day long.