When a release is marked as darkened, the sidebar will only say "No cover art available", with no indication that there's anything special about the release. We should have a better indication of what is going on.

Original description:

Currently when an item on CAA has been darkened (make_dark.php) the generic error message is shown on MusicBrainz when trying to fetch images.

Image not available yet, please try again in a few minutes.

It would be helpful if this was more clearly communicated to the user so they won't try to remove a seemingly faulty image.