I'm using Adwaita dark on my system and org.gtk.Gtk3theme.Adwaita-dark is even installed as a flatpak, but Evince's UI elements use the default, light Gnome theming. (note that I'm not talking about the reader's Night Mode, which is a separate thing.)
org.gnome.Evince 42.0, stable
I'm using Adwaita dark on my system and org.gtk.Gtk3theme.Adwaita-dark is even installed as a flatpak, but Evince's UI elements use the default, light Gnome theming. (note that I'm not talking about the reader's Night Mode, which is a separate thing.)