This one's the most obvious one I've seen the color shift occur...
The original image was taken last Saturday, and scanned after an hour of development.
And here's what I did to the backside:
Finally, the same image scanned a week later (just now), after hanging on a wall:
It seems the only way to stop the shift is to peel the emulsion. Did that once with "meh" results...
I have one more pack of Push and it will most-likely be my last, and I doubt I'll even use it in my SX-70. Much happier with the 600 film and ND filter.