Zone boundry line will not go away

I am attempting to create a colored presentation showing the zones of a building. I have created my zone styles & have done style overrides to make the zone and all of its components the color I would like them to show up...but for some reason there is still a realllllly thick orange line around the zone, which is a different color and its not going to fly for presentation!! All my other zones with spaces attached have worked appropriatley and printed fine. I've tryed moving the display order to the back, I've tried turning off all of the components of the zone that I can to make the thick orange line go away, I've completely hiden the space behind it, just in case that is it!! Anybody have any ideas for trouble shooting?? Also anyone have a best practice for creating a color coded key for this type of presentation? Thanks for any help!