I figured this image was for positioning of numbers and readability. It is true the colours didn't come out true, not sure why.
I've never been a fan of number backgrounds - I feel they just clutter maps, except where they're necessary to make the numbers visible, which isn't the case here.
Back near the beginning of the thread, the first real image I did of the track had 48 countries, but upon Jota's suggestion I subsequently reduced it to 30 because he seemed right in saying that that would more likely give the game the sense of speed and edge-of-your-seat-wet-your-pants excitement that I was trying to get with this map. It could well mean early eliminations, but that's sort of intended - with overly cautious players, a 48-territory no-bonus map is more likely to lead to looong games than a 30-territory one.