Can’t see the maps – GeoChallenge - Flags Quiz + Maps, Capitals, States Review

So very little contrast in the quiz maps, it’s hard to see where the land and water and boundaries are. Several questions timed out before I could tell there was a map being displayed. Everything about the program is so well thought out and done, but it comes to disappointment when the maps can’t be made out. (I am within the normal sightedness for a 48 year-old, incidentally.)
Review by Plaintext on GeoChallenge - Flags Quiz + Maps, Capitals, States.