Process album art

Hi,

I’m looking for a plugin that allows me to automatically process cover art on import (after fetching it and before embedding it).

Use case: I want a fat green border around covers of music imported with beets. That allows me to visually distinguish from non-yet-imported music in any music browsing software (server, laptop, phone, whatever).

Any pointers? Any other ideas to achieve a similar thing?

Thanks!

Modify the plugin ? beets/fetchart.py at master · beetbox/beets · GitHub