[Jim P.]

Certainly the colors don't 'change' over time, but if there was any type of filtering used when the photo was taken, the resulting image may appear to show certain colors to be different to what they actually were with B&W photography. Jerry Crandall gave an illuminating demonstration of this at a seminar at an IPMS Nats a few years ago. (2004 @ Va.Beach?) Wish I could remember the particulars of the complete presentation, but in at least one case he clearly proved that a particular filter would make red appear as white. I would love to see him publish his research on this at some time. And we all know that different types of film can cause similar color shifts.