Transferring textures from one addon to the other

[rOk]

Hi!

Well I was wondering how it's possible to do that, 'cos I have a BOH Type 89APC and a Sigma M1A2 and I want them both to be in the same camo scheme (for obvious reasons).
That said, I did not make those addons, probably have no right tinkering with them, but I concluded that as long as I keep them to myself(and heavens forbid advertise them as my own) nothing can go terribly wrong!
Thanks