In Autocad 2016 for Mac I can see AND print 'black' lifework and hatchings just fine, but if I try to export from model or paper space black turns into grey.

I'm opening the PDF's in Illustrator, Acrobat and Preview. I've copied some of the lifework to a new file and it still exports as grey. I've draw a rectangle in a new file, hatched with black and it still exports as grey.

Please help!