These decals definitely need to be printed opaque, so with a white background or opaque ink. The light blue lettering is a lighter shade than the overall blue of the fuselage. If you print these without any white backing or specialized printing techniques, (a lot of decal makers use laser printers..), they will disappear over the blue fuselage. So, the only way of producing these is by means of screen printing, ALPS printing or UV flatbed printing. So, not too surprising no-one did them yet 🙂
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