If you recall Bill Clinton's defense of his "I did not have sex with that woman, Ms. Lewinski" comment had something to do with the meaning of the words "have sex" - "It depends on what the meaning of the word is is". Lawyers are infamous for parsing ambiguous meaning to their own purposes.
Let me give you a rather crude example of the imprecision of language - if I say the word "rock", there is a certain assumed common idea of what it means that you and I both share. Yet when I say "rock", the image of a rock that you and I conjure in our heads is almost guaranteed to be completely different. The more words I apply to that rock - "large rock", "large brown rock", "large brown granite rock", "large rough brown granite rock", "large brown granite rock in the shape of Abraham Lincoln's head", the more likely we are to picture the same rock, but until we are both face to face with
the actual rock we are talking about, we will never see the exact same rock in our mind's eye. It is because language is an approximation of what it purports to represent.
Well, so is a photograph. A photograph is a multi-dimensional reduction of its subject - it is a compression from four dimensions to two (height, length, depth, time, compressed to height and length), constrained by composition as an act of exclusion to fit within the confines of a piece of paper or a computer monitor. Its ability to accurately record color is at best conditionally precise. Through the course of experience, we know the hows and the whys of color imprecision, so it is predictable and manageable, But it is still only conditionally precise.
Remember the gold and white vs black-and-blue dress?
https://en.wikipedia.org/wiki/The_dress same photo, two radically different interpretations. If that were introduced in court, the jury could see it as being gold and white, yet an eyewitness could have testified it was black and blue, and as a result, the jury would acquit someone on the basis that it wasn't the same dress, therefore the witness identification was wrong. But the photo is unmanipulated.