Colours in preview different than in a normal buffer

[d-miketa]

Hi, thanks for the plugin! I'm just trying it out and like it a lot, but the difference between colours in normal buffers and, say, reference previews, is distracting:

I'm using Treesitter; it looks like it's not applied to the preview.

[andersevenrud]

Seems like this uses the bat executable for doing the previews. I just noticed this because I ran into an error because it was not installed. So this does not use the vim highlights at all it seems 🤔