Theming (light/dark mode) for Graphviz?

[qwertychouskie]

By default, anything output from Graphviz just uses default colors, which is pretty jarring in dark mode:

Currently we use a bit of a CSS hack to make it look better:

@media (prefers-color-scheme: dark) {
    /* Make diagrams look (mostly) correct in dark mode */
    img.graphviz, object.graphviz {
        filter: invert(87%);
    }
}

That makes it look like this:

While it's certainly an improvement, it's a bit hacky and the background color visibly doesn't match. The "Sphinx-Immaterial" theme seems to have a better solution, where it actually uses the theme colors in the SVG: https://jbms.github.io/sphinx-immaterial/graphviz.html It would be nice to have something similar in furo.