If you want a determined camo, just unpack this camo textures from the .dat files and put them into the ....\tex folder you are using.
Then no new .dat files form a new mod will override them any more.
But, be sure the new mod you install doesnt have these textures unpacked and installed into its \tex folder, if not it will overwrite yours.
In this case, just eliminate the unpacked textures form the new mod before install it.