Drawing squares on a map, is it real?

Hello everyone. Initially, I apologize for my English, as I do not speak it well. Rust has a game card that opens with the letter "M". It is necessary on this map to paint over the indicated sections for each individual player with the indicated colors. Here's an example of how it should look. Is this feasible, in principle, without a custom map?

 

I don't think you can paint on the map nowadays the way you want.

OfNCHdcE55rmmTP.png misticos

I don't think you can paint on the map nowadays the way you want.

Is it possible to do something approximately, as in the picture at the beginning of the topic? For example using map marker, or CUI?

You could use map markers with radius and color, but that isn't a good solution really, and possibly laggy, it depends. And UI no because you dont know if user moves the map or scales it.