I was wondering if it would be possible to set up a buy list where everything on the list was green team in-game.
That is, when you buy a soldier from the list, it is on the opposite team as you.
It would be funny in certain scenarios.

So anyways is this possible, and how would I do it?

I imagine it would require an actor with a Lua script attached that would, upon entering the battlefield, change it's team to the opposing team. This may not work though because I think changing teams via Lua is pretty wonky right now.

All the script would have to do is destroy anything your ordered immediately and replace it with an identical order for green team entering the field.

This is actually, a very cool idea.

Or, if you're less picky, luaspawn actors on the green team.

Something like the Clone Tube could be modified to produce green actors, with random weapons, on demand, quite easily.

Can't you set the team in the ini? I remember being able to. You just need to CopyOf them with an additional line to set the team if I'm correct.

Yes, but if you buy them regularly, it will still set the team to the team of the player.

Ah. Okay.
If you were still determined to use .ini only, you could probably add the team set actors as gibs to a throwable bomb.

Wouldn't a bunkermodule that just takes every newly spawned object and turns them and their contents into green team work best?

You mean this?

couldn't you just hook any new crafts and turn them and their contents to the opposite team? ie iterate through a table full of craft pointers, and then for every craft on the map check if they exist in the list, if not add them to it and do the flip. would require smart use of the inventory handler script but would be pretty easy.

IE what lizard said, but not a bunkermodule because those are terrain and thus can't be scripted.

A pinned null mosr with script attached?

Also possible, but you dont get the added bonus of having your controls etc handled by the engine, for aiming and the like.