Hard to say. But lots of amateur color neg films, or even some of the older professional ones, could produce an exaggerated orangish or pumpkin effect with Caucasian skin tones, in combination of cyanish off-greens. It was the characteristic signature of older Vericolor portrait films, for example. Warm evening light would exaggerate it even more. A warming filter wasn't necessarily involved, but could have been. A neodymium enhancing filter would do it under normal lighting. Printing that kind of thing RA4 is easy if that is the kind of color balance in the original shot itself.