Perhaps this is working as intended, but I cannot tell the (color) difference between copper and stone once the pollution cloud covers the resource field. Of course mousing over will identify them, it just caused me a bit of confusion when planning out some mining nodes.

Not really a critical bug ...

Great garbanzo beans, this game has blown my mind!

There are so many details that are only restricted by imagination. One in particular comes to mind as a "well-thought-out implementation". One of the first Achievements I received was the "It stinks..." award, which answered the very important ...