Hi and welcome Dylan,
Deceit will certainly be a part of NWAC. We're working on forms of jamming that deceive enemy radars about the number and types of aircraft detected. We may also implement decoys in some form.
Creative lighting and camouflage has been used in the past to make warships appear as civilians (I think this is often unlawful under the laws of war, though). However, modern warships have such a wide array of methods to identify targets, especially within visual range, so I am not convinced it works anymore.
Moreover, unlike the real world, which is very open-ended, in a game you would actually need a user interface option (button, menu) to "make this ship look like X". The number of such options would necessarily be limited, and any opponent would be aware of all of the possibilities. This really limits the element of surprise.
But I like the idea.