Change behavior of dials.image_viewer when displaying shoeboxes from a reflection table with multiple experiments.  Display the shoebox pixels in a different color for each experiment, a tad dimmer color than that used for the overall prediction. Also, show overlapped pixels in an entirely different color.
Change behavior of dials.image_viewer when displaying shoeboxes from
a reflection table with multiple experiments.  Display the shoebox
pixels in a different color for each experiment, a tad dimmer color
than that used for the overall prediction. Also, show overlapped
pixels in an entirely different color.


dials/dials,dials/dials,dials/dials,dials/dials,dials/dials