So- Guess what's happening today?

I managed to change the plot style on the old .ctb file that was opened with the new version of AutoCAD Mac 2016.

I did this by saving an old .ctb file as a .ctb file with a new name.  It seemed to work, after saving and opening the file. 

The only problem now is, while I can view my plot style in layout - all are plotting in black- The layer colors are no longer visible in Model Space.

All of the lines show up as black, even when I toggle the viewlineweights button. No change.  No layer colors.  WOW