All the files typically open with a solid white background. New files and the overwhelming majority of legacy files, as well. I haven't been able to find in options/settings a way to set my preferred background without having a file open, i.e. one that I set and when I open things it shows me things the way I'd like to view them. I'm somewhat new to Solid Edge, having come from about 7 years of SolidWorks, so any help is certainly appreciated - I couldn't find the answers I was looking for in other online searches!