I ended up making my own package (which I stole from sphinx) and including it so I can keep all of my style separate and pick and choose what other stuff I use

I ended up making my own package (which I stole from sphinx) and including it so I can keep all of my style separate and pick and choose what other stuff I use - like minted for example. I've found it a bit of a mixed bag though - setting up minted in one of me .el files and some of it's styling in my .sty file. Not sure if I'm really doing it right, but the output looks OK for now and I assume it will be much easier to tweak it in future.