No, I haven’t, I don’t have a good refactoring tool, and I haven’t yet figured out what needs to be changed to make it show up as a different theme without breaking it.

I now found a way to properly install it onto KDE neon, now a fully working guide is on the readme if you’re still interested:

https://github.com/Bali10050/Lightly/#KDE-neon

Because it works like that, but in the traditional way, not all corners are rounded, and there’s no margin in the bottom.