This is a minor proposal which softens the drop shadow effect for thumbnails on Dolphin. It changes the color from pure black to #616161. It's not a significant change, rather just a minor parameter tweak, but I think makes Dolphin overall slightly more pleasant to look at.
On this album, there are some before-after images which showcase the current revision and the proposed patch.
Link: https://imgur.com/a/TxgdB