I have created a map with some 'status icons' (status only - transparent) pointing to some ping sensors.
As expected, the only thing that is shown is a green square status icon. The actual icon is 90 by 20 pixels, but this is not a problem since the background is transparent.
Unfortunately when a ping sensor goes down, its background is no longer transparent, becoming a 90 by 20 pink box. Can I somehow force it to be transparent, resulting in just a red square status icon?