Improved Map contrast to see ores better, / "highlight ores"

[Peter34]

I often find the map difficult to use, in terms of seeing certain ore types, because of the consistent use of the checkered pattern. It often contrasts badly against my favourite terrain type, the Desert.

In the in-game view, during the day, ores are eminently visible (unless obscured by Trees),but at night when I find myself needing to locate some more ore (almost always Stone, but sometimes Coal) I need to use the Map view to find them as I can't see a damn thing in the in-game view, and the Map does not prove helpful in such situations.

I'm not talking about using the Map to see far-away deposits, but about seeing well-known deposits that are very much on my turf, especially small patches (8-15 tiles) of Stone. Some kind of key press, in the Map interface, to "highlight all known ore deposits", would be super nice.