The colour and saturation of the images you posted are due to:
1) the illumination at the scene; and
2) the process used to come up with a display image.
The two images below were shot on Portra 160NC - the slightly less saturated version of the current Portra 160. The difference in their appearance is due mostly to the placement and diffusion of the light source.
I see. Thanks.
The Noteworthy Ones - Mamiya: 7 II, RZ67 Pro II / Canon: 1V, AE-1 / Kodak: No 1 Pocket Autographic, No 1A Pocket Autographic