Looks pretty cool! Although I like to use my own assets, so it's not really a good fit for me, sorry!
Judging from that bluesky post, that frame certainly looks pretty gameboy-accurate, and has a nice palette. I've seen some games use similar-ish borders before so it's definitely something people like to do.
You might be interested in taking a look at Super Game Boy frames, although you might already be familiar with them.
https://www.vgmuseum.com/features/sgb/
If you scroll through that list, you'll see there are a good few that're styled after the different Game Boy versions, just like your example frame!