July 18th, 2016, 05:50
Couldn't have put it better myself.
CFS3 does not reply on any particular folder structure for textures, so simply add one folder per skin, and keep the file names the same as the original. So all the skin files would be called, say, Hurricane_MkI_XXXXX_t.dds, and obviously, you'd be obliged to have them in separate folders inside the aircraft's own folder.
Having said that, make sure no other aircraft uses the same texture name, as CFS3 hunts through the entire install for texture files. That means that your playable aircraft would also have random skins.
In practice, I actually dropped this idea, because it has two side-effects; first, every AI Hurricane, let's say, will have the same skin. It won't put one on this one and one on that. It decides which to use, and uses that one...