Actually, to get the colors to overlay, you have to do this:
* turn on See TT Atlas
* choose the colors from the Atlas Colors menu
* do something to force the image to redisplay (e.g., change slices)
There is no communication from the Atlas Colors menu to the image viewer, telling the image viewer to redisplay when the colors change.
Jumping to the hippocampus would help, too. It isn't that big, esp in coronal views.
bob cox