Colors

[WonkoTheSane]

That's because there is only one roman faction and others are entirely new.

Here's the faction list:

RTW EB
Seleucid Romani
Pontus Saka Rauka
Scythia Averni
Parthia Pahlava
Numidia Ptolemies
Julii Arche Seleukeia
Egypt Qarthadastim
Gauls Averni
Germans Sweboz
Britons Casse
Macedon Makedonia
Carthage Pontos
Scipii Hayadsan
Dacia Getai
Brutii Baktria
Armenia Saurometae
Thrace Epeiros
Greek Cities Koinon Hellenon
Spain Lusotannan
Senate Saba

[JNR]

I also tried some different second colors but it's still looking best if primary and second color are the same. Then you can't see the province borders but the colors on the mini map appear more harmonical.
The only thing I would do is changing the second color of the Eleutheroi the primary one because then the mini map looks much better and the Eremos province doesn't seem too big and strange-sharped anymore. The south border of Carthage is now somewhere in the desert, you can't see the exactly line anymore only looking directly at this region of the map.

[SwissBarbar]

nah, I wouldn't change the Eleutheroi. They represent not one huge faction but several small tribes and kingdoms. So they have to have borderlines