This is specifically about the Crystal icon, although I think it extends to all black/almost-black icons.
The Crystal icon is literally impossible to see on High Contrast (my preferred theme, due to a visual impairment). It would be nice if there was a way to invert the color of an icon (or if there was a light version of the Crystal icon)
In the meantime, how would I go about changing the icon for dark themes only? The wiki is a bit impenetrable :(
Screenshot:

This seems like a bug to me.
cc @JimiC
Indeed I should have made a dark version icon. As soon as I find some time I'll provide one.
Regarding the API you have a point. We haven't documented the supported object properly. We'll see about adjusting that.
Thanks @JimiC @jens1o :)
Most helpful comment
Indeed I should have made a dark version icon. As soon as I find some time I'll provide one.
Regarding the API you have a point. We haven't documented the
supportedobject properly. We'll see about adjusting that.