livecode changes image colors without being asked to do it

[Robert Brenstein]

I have a stack that dynamically sets the image that is displayed on a 
card using

	set the filename of img vImageName of stack vStackName to vFilePath

I just encountered a problem with a new batch of jpeg files. Their 
colors change when they are displayed in the stack. I mean that when I 
open them in Preview, the color saturation and hue are different than 
when viewing the same pic in a stack.

Anything I can do to avoid that or anything I can tell the graphics 
person to do differently when producing those files in AI?

RObert