From description:
combining both original and colourised footage
For me the historicity of a colorized scene is similar to a reenactment. I hate when they mix original and colorized footage, or if they don't give a proper notice on a colorized section in a docu, or colorized images in an historical article. It looks like the truth, but it's not the truth, and we cannot be sure how it actually looked like. And if we cannot be sure, than there is a possibility that it's fake.
I know a lot of people don't share my view, and it's alright, I'm just an old man who yells at cloud....