Where to remove minimap opacity in visualGGPK?

[xsw2]

Map transparency always my problem. I just want to get rid of transparent background and let the miminap background completely black. However, I cannot find the resource related to this minimap. Does anyone have any clue?

Edit: or maybe change the blue edge line to the red, make it bigger. That should be fine too.

want something like this. Thanks!
as.png

[APXEOLOG]

I'm pretty sure minimap is rendered purely programmatically and there is no resources related to it