Please add support for saving a dark themed StoryMap to a PDF with its intended dark theme appearance preserved.
Currently when you use the StoryMaps' Print Preview feature it converts dark themed stories to a light theme. Presumably this is done to save toner or ink when sending the story to a printer.
If the goal is to save the story to a PDF, and use it electronically, rather than sending it a printer, then one may want to have the PDF produced using the story's intended dark theme.
In many browsers, using the built-in Print Preview functionality supports this with an option like "Background graphics" (Google Chrome). If enabled, then a dark background is carried through to the PDF, while when disabled, a dark background is replaced with transparent/white.
ArcGIS StoryMaps, however, force the change from dark to white backgrounds before the browser's Print Preview is invoked, so one currently cannot use options like Background graphics to preserve the dark theme appearance of a StoryMap in a PDF.
Perhaps as part of the StoryMaps' Print Preview step, an option could be offered to enable preserving a story's theme?
