Quote Originally Posted by Caledonian Rhyfelwyr
If you mean the lines that split up your regions on the mini map, then its data/descr_sm_factions. Just find the 2 RGB values for whatever factions you want to edit and remember to use either a mod folder or io-filefirst.
That would only allow him to recolor the borderlines but not get rid of them entirely.
He could of course color them all the same, but then every faction would look identical on the strat map too, which would defeat the purpose.