Alliance are a serie of different mods. On the Star Wars GC, you can play the civil war Empire vs Rebel era + Black Sun and soon the Republic and CIS.
I have replaced the color factions by new colors more similar to the symbols from each faction.
The biggest change is probably the blue-grey for the Empire.
About the violet and cyan, they are from Harkov and Zaarin forces, the same used on the old game TIE fighter.