Is is possible to import themes defined in Windows 10?
One option could be WB capturing properties of default or active Win 10 theme. It could be other software saving into themepack file format which WB can read. It could be WB importing deskthemepack files created by Win 10 or other software converting from one format to another.
I tried installing themes in WB from deskthemepack files, but none appeared on the list of available for use themes.