Eli5: How do black and white movies/documentaries get turned into color?

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I’m watching all these WW2 documentaries and they all have it in color now. How did they do this? I kind of understand exposure and film but that’s about it.

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4 Answers

Anonymous 0 Comments

A lot of the time it’s as simple as the fact that we know certain items were certain colors. Army’s been using the same green paint for decades, we know what color that tank should be, what color that piece of gear was, we know the sky is blue, and we can guesstimate shades based on the shade of gray it appears in B&W.

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