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Sergio .. here is an example of what the difference between the red wood mahogany colour and the one used for the tops and sideds of the plane. The mahogany paint is applied on the spinner and prop while the camo one is of slightly different tone.
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the pic source: Modelarstwo z pasją • Zobacz wątek - Hyakushiki Shitei III Kai (zwany Dinah) - 1/48 Tamiya
The guy there used the mix of the Tamiya XF-10 (Flat Brown) + XF-60 (Dark Yellow) in 1:1 ratio for tops and sides and the mix of the Tamiya XF-12 + XF-19 also of the ratio 1:1 initially Because the colour for the tops was found of a couple of different tones depending on time, factory/manufacturer and weather. So you don't have to be accurate at the 100%. Due to problems with the yellow markings the guy changed the colour for tops to the Vallejo Model Air 71.038 Camo Medium Brown and repainted the model. Please check on the link below.
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the link: [W] Hyakushiki Shitei III Kai - 1/48 Tamiya