Using MPL config dir for 3rd party config files

Over at napari-matplotlib we’re currently working on allowing users to specify a custom Matplotlib style file that is used to style figures produced by the plugin. We’re currently wondering which directory to use for users to store their custom style file, and my current thoughts are to look for matplotlib-napari.mplstyle in the Matplotlib config directory

I wanted to ask folks here if anyone could see any issues with doing this? I presume the Matplotlib config directory is unlikely to change or move in the future?