It is cold and snowy here in Calgary, still dark @ 0700 hrs. I recently started a trial period of 30 days with Acad Inventor and the first task I undertook was to open one of my ACADLT drawing in the INventor program. The background to the drawing was black, and I prefer to draw with a white background and black lines. I have been unsuccessful in changing the display. Any help with this would be appreciated, so I could go from  to !