Add compatibility for dark themes

[sam (Sam Saffron)]

@md-misko

is it possible for the component to add wasm extension to settings.theme_authorized_extensions by itself (it requires an additional manual step now)

Already changed in core to add wasm in the default allow list, are you sure you did not fiddle with extensions on your install?

@md-misko

svg lines and text are rendered in black, which makes them invisible in dark mode. Is it possible to detect dark mode and render lines and text in white.

Great suggestion will see if I can add dark mode support!