And everyone ASSumes that the engine was never touched since the day it was put in the car at the Chrysler plant. Is there a clear paper trail and is everything that ever happened to the car, or the one in the other picture known since it was new? I know of cars that had to have their original engines rebuilt shortly after new due to a variety of issues. There are many scenarios of why it may be painted differently than the majority of known original owner vehicles that are definitely turquoise...
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
Is there a clear paper trail and is everything that ever happened to the car, or the one in the other picture known since it was new? I know of cars that had to have their original engines rebuilt shortly after new due to a variety of issues. There are many scenarios of why it may be painted differently than the majority of known original owner vehicles that are definitely turquoise... 
