I've been working on a few border-overlays (bezels) and thought I would share them with the community! All overlays are intended for a 16:9 format using the core provided system aspect ratio in RetroArch. Adjust the opacity to your liking. These should work fine in Launchbox, but I haven't tested this as I have only ever used RetroArch to display overlays.
For those interested, I use Solid12345's excellent analog shader pack (#3) for scan line filtering. You can find this pack over on the