Problem

The focus outline is currently completely hard-coded. This is problematic as it becomes unusable on a light background.
Additionally, game developers might want to adjust it to their color palette.

This was mentioned in #16798 (comment) and #16798 (comment).

Solutions

I think ideally there should be a formspec way of styling the color and maybe the thickness […]
~ @appgurueu #16798 (comment)

Alternatives

Leave it as-is.

Additional context

No response