Hide/Reveal Mask Colour

Is it possible (or could it be made possible) to change the colour of the Hide/Reveal Mask? Currently, a large black splodge covering much of my map looks a bit off.  It would be nice if I could make the mask the same colour as the background of the map. This way, as parts of the map are revealed, they would like they are appearing on the map, rather than being uncovered.

<a href="https://app.roll20.net/forum/post/1241902/replace-fog-of-war-with-an-image#post-12098194" rel="nofollow">https://app.roll20.net/forum/post/1241902/replace-fog-of-war-with-an-image#post-12098194</a>

oh ok. &nbsp;Thanks. &nbsp;Sort of. &nbsp;10 years of similar requests in that topic is a loooong time.