With the light blue, Moustique, you could go with whatever shade
is pleasing to
you. With the exposure to the elements and a
whole mess of variables, you could pick just about any shade within
reason and you would have an exact match to at least
one aeroplane.
Just pick one that has a good contrast with the "scaly" decals.
That's about all the useless advice I can come up with, my friend.

Cheers,
Ernie
