I believe gridlockd's point was that the colorization and interpolation applied to these films and photos is a modification to and a stylistic choice about a representation of the state of the world, in the same way Van Gogh's skies are modifications and stylistic choices about the skies he saw.
It's not even so much about stylistic choice but about the historicity of it. Van Gogh belongs to an era in art history. If you chose to paint in this style today it would have a different meaning, even if it looked the same.
The way these photographs look is as much part of history as what they portray - whether intentional or not. These enhancement processes will remove that part.
