I suggest to add some collection indicators (colours, different font, small icons like on Discogs, drop-shadow like in COLLECTION HIGHLIGHTER), e.g.
- to the artist overview to indicate RGs that contain releases from my collection
- to the releases tab of an artist page to indicate releases from my collection
- to the release group pages to indicate releases from my collection
- to the release pages to indicate recordings from your collection
- to any edit views to indicate that a release / RG / recording / work from my collection is edited
- to the recordings and works tab of an artist page to show recordings and works that are part of / related to one of my collection items