You are mistaken, the image claiming to show wet blood has been digitally manipulated.
Granted the other photographs are not taken directly from the negatives, however both of the photographs which are shown in the comparison in my previous posts, ARE the same image, you can quite clearly see cracked dry blood on one of them.
They are NOT the same image. Just because you have two photos of the same thing does not mean they are identical copies. If you look at both pictures in detail and compare you can see there is a remarkable difference.

If those on left came from the image of the right then GDS done a bloody good job (no pun intended)
This would not be a case of simply enhancing or saturating the colours he would literally have to reconstruct the photo, Now considering Dodgy Distefanos reputation it would not surprise me if he did but where is the proof Distefano produced this forgery?