How do we get a preview image in the SVG icon picker when we import our own SVG?
I know that the image must be 24x24px. If I use a fill colour that is white or grey I can see that the preview image is being generated. However, to manipulate the icon colour using the button: icon formatter or via conditional formatting, the icon must be black.
I presume that the icon picker is displaying a black image on a black background, so it's invisible. How is it that the default icons are able to generate a visible preview? I've looked at them and copied them without success.