This might help: Regia Aeronautica and ANR Colors and Camouflage Schemes.
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The new camouflage scheme, the so-called "Honeycomb Camouflage Scheme" used existing colors, however, were now applied in a more complex, soft-edged mottling scheme (…). It is important to note, at this time only the camouflage scheme was standardized and not the colors. The standardization of colors would only come later with the appearance of the Tavola X colors. This of course led to interpretations of the three primary upper surface colors stipulated by the directive
The basic application of the "Honeycomb Camouflage Scheme" varied with each of the aircraft manufacturers, the unit and in some cases with the individual aircraft.
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