Care to share a how-to? I'd love to fix this for my collections as well. Even if it takes a bit of work.
Another issue I am seeing, even if I choose a photo file for the folder icon image, the system displays a random icon anyway. If I have a photo and a video in the same folder, half the time a random frame from the video is shown instead of the poster file. I'd love a fix for that as well. Any ideas?