In the 1980s, all computer monitors had dark backgrounds. If you are from my generation, you probably have a vivid memory of monochrome screens that had green or amber characters on a black background ...

Anna Cox, a professor of human-computer interaction at UCL, dispute this is the case, saying, “I’m not aware of any robust evidence that white text on black background reduces eye strain”.

Her background was in computer science and electrical engineering, and she got involved in the project while pursuing a Ph.D. in computer ... movies of black holes in addition to still images.

Dark mode is an increasingly popular accessibility option, from Twitter to Reddit to MacOS. But achieving the perfect grayscale site isn’t easy.