Forced icon styling

[nilshoerrmann]

Kirby 4 has this definition in its styles:

:where(svg) {
  fill: currentColor;
}

This can render outline icons into white/black boxes.

I'm not sure if there is a way to reset this for icons within this plugin's components and default to the fill attribute in the markup. But it would be great if:

1. there was a setting for fill in the blueprint or
2. there was a note in the readme how to prevent this with a custom panel CSS.