Have a read of this, particularly 4.1 on the first page:
http://www.apas.gov.au/PDFs/0501.pdfShould tell you everything you need to know. Technically, rather than dealing with two different standards, Australia has its own Australian Standards for paint colours. You can go into any Bunnings store (I note you're in Australia) and they can mix up a can of any Australian Standard paint colour you want (although it will probably be too dark when scaled down to 1/350 or whatever scale is your thing) Note: NIRR = Near Infrared Reflectance; TSR = Total Solar Reflectance
c) Type II coatings are durable, colour-stable, low solar absorbing paint topcoats pigmented to either AS 2700 N42 Storm Grey colour or US Federal Standard 595C 26270, Haze Gray colour to be used for the finishing and refinishing of Navy vessels and associated equipment. They can be either low gloss (0501/1) or semi-gloss (0501/2). Together with the recommended primer, they provide a protective airdrying exterior surface in marine atmospheres.
d) Note that although the RAN Haze Grey topcoat is the same colour as USN Haze Gray, it differs from the US coating in NIRR, metameric requirements, gloss level, TSR and colour and gloss stability. The Type II coatings are formulated using polysiloxane as the resin binder. To minimise solar heat absorption the polysiloxane coatings shall have a NIRR of at least 60% at 800 nm for the RAN Haze Grey colour and a NIRR of at least 65% at 800 nm for the N42 Storm Grey colour and shall have a TSR of at least 42% for N42 Storm Grey and at least 38% for RAN Haze Grey when measured between 300 – 2500 nm.
cheers,
bj