When I create a map in print composer the map looks exactly how I want it, but when I save it as a PDF some of the sympbols have changed. Note the roads are still visible in the PDF but some have changed to be a light grey, from the black that they are suppose to be? Why is it doing that and how do I fix it? If I unselect print as a raster, then the colours of the map change all together. Map as seen in print composer. PDF as raster.