Good progress to report with the Cobra. As this is the 'W' variant it is actually a bit late for the era I have in mind for Little Cold Wars (the late 1970s) but I'm taking the view that one AH-1 looks pretty much like another. OK plane spotters, please stop gnashing your teeth now.
As such, this Cobra will probably end up in overall Olive Drab with USMC markings. There is no shortage of Cobra footage on the interwebnet - I particularly liked this clip: https://www.youtube.com/watch?v=wV2hADH9TBo