Okay, so from his first image, the top left is SDCC (red shins & blue feet), top right is JP (grey shins & blue feet like Gen1 toy), bottom left is Hasbro retail (red shins & red feet), and bottom right is the actual Gen1 toy.
The chest area is also different colours between the three... so it comes down to a choice between what looks nicest to you, or a Gen1 colour scheme if you are a stickler for that sort of accuracy.