Is it possible to give Roman Auxilia to Gaul, rename them Gallic Auxilia (just for Gaul), and get a green version for Gaul. I tried this but they were red:

type barb_auxilia_gaul
skeleton fs_spearman,
indiv_range 40
texture gauls, data/models_unit/textures/unit_roman_auxillia_infantry_julii.tga
model_flexi data/models_unit/roman_auxillia_infantry_high.cas, 15
model_flexi data/models_unit/roman_auxillia_infantry_med.cas, 30
model_flexi data/models_unit/roman_auxillia_infantry_low.cas, 40
model_flexi data/models_unit/roman_auxillia_infantry_lowest.cas, max
model_sprite gauls, 60.0, data/sprites/romans_senate_roman_infantry_auxillia_sprite.spr
model_tri 400, 0.5f, 0.5f, 0.5f