The background of Evince when reading a document should be grey/black because it would be easier on the eyes
Summary
The background of a document should be grey/black because it would be easier on the eyes
Description
I think it would be a good idea to make the background of Evince grey or black reading a document even on light mode, because it's easier on the eyes even for the users who don't want to use the dark mode on GNOME Shell, or at least it would also a good idea to add an option to let the users change the color of the background of Evince.