Yeah I kept the colours similar on all these models because I hope to use the palette to differentiate different countries. France, generally, lighter green than others, Germany dark green-grey, British dark green and black mostly, plus cool urban camo on some types (see chieftens of BAOR). USA generally had 3-tone camo, and so on. Plus most of those models are sharing the same skin images so of course will look similar ;-)
The tank sound is my error in XML, meant to only sound when you give it a command. Will fix in future.
Anyone can add sides - France will be the base one to balance to (only because I started modeling the AMX-13 on a whim). Provided the faction is in keeping, sufficient quality and balanced....
Other sides I'm considering are Sweden and a second Warsaw pact side with alternative equipment choices to the main soviet one.
Vietnam cong, china etc are harder as they were less distinct at this time. They also lack many core unit types I suspect.
Israel, Egypt/Syria etc or even Iraq are possibles but a bit too controversial I expect.
China and