If that is the same paint that you supplied me a sample of and we decanted into 4 litre tins that is in the Florite data base and they can make it .
That paint was coultards Alkyd 405488 Camo Green 6477
Other wise provide me with a sample and we can spectrgraph it and get it into the data base. something bigger than about 4 inches square and as pristine as possible.
Exact matches for those paints is not a possibility anymore. From the Mid sixties the Army was playing around with pigments that gave the same infra red reflection as the foliage they were going to be used near. The pigments are generally not available.
The upshot is a re-matched paint will look identical save that in some light conditions will look different . Given others must have done this with Land Rovers especially and I have not heard an outcry about colour matching I guess the colour matching so far has been good enough to pass muster or some one still has some original supplies someplace.
I note the REMLR club has some chip-sets from the period . perhaps we could convince them to get them spectrographed and make the information generally available .
http://www.remlr.com/paint.html