While we're talking about factions having similar map colors, I am a bit puzzled by the number of factions represented by various shades of brown or tan in EB1. Lusitania, Getae, Macedonia, Sarmatia, and Saba all use this rather uninteresting color. And three of them start adjacent (or nearly) to one another. I know nothing about the historical accuracy of these colors, but I certainly don't find them very endearing in the game. :)

Now that it's been suggested, I think I will alter their colors for my own game. Thanks!