I used a set of paid UI plugins for VX Ace called the Luna Engine, which took a LOT of fiddling with numbers and settings in scripts. It has some compatibility errors with some scripts, if you're trying to insert it into an existing project, and honestly it's a little buggy even on its own. Despite still being sold as official DLC for the engine on Steam to this day, the devs of the scripts dropped support and stopped fixing bugs years ago. I tried contacting them about bugs probably in like late 2016, only two years after it was released and one year after I bought it in a Humble Bundle, and by then they'd already dropped all support for their VX Ace scripts and moved on to MV.

Ah, the joys of RPG Maker development. And people wonder why I want to stop working in this engine.

Anyway, in the end, I did get it to work, and the results are great. So the Luna Engine technically still works. But it takes a lot of elbow grease.