Try editing the DB table uniform_to_faction_colours. This will allow you to change the faction colour for just this unit.
Morning Sun (adds Korea and China to the Shogun 2 map)
http://www.twcenter.net/forums/forum...28-Morning-Sun
Expanded Japan mod (97 new regions and 101 new factions)
http://www.twcenter.net/forums/showt...ew-factions%29
How to split a region in TWS2
http://www.twcenter.net/forums/showt...split-a-region
Eras Total Conquest 2.3 (12 campaigns from 970-1547)