Hi Rudi
Set #1 features homegrown RAAF colours that had no direct RAF equivalents (Earth Brown and Foliage Green were quite distinct from RAF Dark Earth and Dark Green). Set #2 is for US produced aircraft, so there are a few standard USAAF colours like Olive Drab and Neutral Gray, but the "British" colours are the US Dupont variations, which were noticeably different (although some shared the same names) so, strictly speaking, it's not just a RAAF set (despite its title), but will have much wider applications.
All the best
Rowan