dark theme support

[Inuart]

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Clear and concise description of the problem

I wanted to publish a Page with some Graphviz diagrams, but I can't see them because while I have Anytype configured to us the dark theme, the published version is exported using the light theme, resulting in my diagrams to be drawn white on white.

If I change the diagram's lines to be black, then I can see them in the web page but I can't see them in the app.

Suggested solution

I guess a solution would be to default graphviz's fontcolor to the browser's CSS color, since it can be adapted to follow the browser's theme preferences.

The export should be able to take prefers-color-scheme into account.

Alternative

I tried to use a black diagram background color, but then my "automatic dark theme" browser setting just changes the background to white and the diagram lines and text are kept white, so still invisible.