Idea for Terrain ID'ing - Workable?

[Changmai Beagle]

I'm one of the poor souls without real graphics. I can see farms and trees and goods and roads and wave lines, etc., but not plains, hills and peaks.

I am not complaining. I'm still playing, I just use the tooltip a lot.

However, what if I put some sort of identifying mark on the terrain (easist would be a m for mountain, p for plains, h for hills, etc)? Is that even doable? Any idea how I could do that?