> Related, a combination of red and dark blue text on a black background tends to jump out from the screen for me, seemingly gaining a third dimension. This ef

> Related, a combination of red and dark blue text on a black background tends to jump out from the screen for me, seemingly gaining a third dimension. This effect is called "chromostereoscopy": https://www2.warwick.ac.uk/fac/sci/physics/research/cfsa/people/erwin/research/3d/principles/ https://www2.warwick.ac.uk/fac/sci/physics/research/cfsa/peo... This has been commercialized into something called ChromaDepth (using special holographic lens glasses to enhance the effect): https://en.wikipedia.org/wiki/ChromaDepth https://en.wikipedia.org/wiki/ChromaDepth Strangely, the above patented system notwithstanding, I recall from being a kid this (or something similar) being marketed (with glasses too) as part of a really cheap and cheesy comic book (I most likely still have copies of that comic book at home), sometime in the 1980s. Unless I am mis-remembering the timeframe (possible), it was long before ChromaDepth (I also recall it being used for firework displays, too).