Viewer Pane Background color between file changes

I have the color black set as the background when no file is being previewed in the Viewer Pane,

Is there a way to keep that color Black/Dark between file changes. Currently it flashes a white background when switching/loading the next file.

What type(s) of files are we talking about?

If PDF or similar documents are involved, the white flash is probably coming from the PDF viewer rather than Opus. Same with Word and other Office docs.

Images that Opus itself shows should not flash to another color while loading.