If you're deliberately displaying the image in black and white, the colour pattern is interference that should be suppressed. However, this practice was not un

If you're deliberately displaying the image in black and white, the colour pattern is interference that should be suppressed. However, this practice was not universal, and archivists have now recreated colour copies (https://en.wikipedia.org/wiki/Colour_recovery https://en.wikipedia.org/wiki/Colour_recovery) of some shows where only black and white recordings survived by reconstructing the colour from these interference signals.