Game Interface - changing whatever minimap icon/image/model this is

[Marine]

My minimap is dotted with these ugly grey squares, which are the neutral buildings I've placed on the map. They are based off of Gold Mines, and the following fields were edited:

Abilities
Ground texture
Model file
Scaling
Selection scale
Shadow texture
AI Placement Radius
Pathing map
Name

What is the name of these grey squares in the Game Interface? I'd like to edit them to be smaller, but I can't find them anywhere. Thanks!

 

[SAUS]

I am not sure if you can make them smaller or not. I know there is a "hide minimap icon" field somewhere in the stats section. You could put a neutral, dummy unit on top of them all and it should show up smaller.

 

[Daffa]

That's Neutral Color (Black).
You can modify the player color to give it some coloring, or set hide minimap icon to on and it will show as something else AFAIR.

 

[Zwiebelchen]

You can replace the icon texture for gold mines in the Game Interface menu.

You can either use a new icon or remove it by importing a transparent texture for it.