Hi Roger,
Don't worry mate, the model looks good to me.
As Haddock says, use the TLAR rule (That Looks About Right). Colour is always subjective, especially with film quality, fading by sun, salt, and personal recollection. After nearly 60 years, the exact Blue of my first model (An Airfix Sopwith Camel) still eludes me.....
So, wartime aircraft, in conflict area's might look totally different to the actual intended appearance by the manufacturer, so I think what you portray it is a matter of YOUR interpretation, not anybody else's.
Cheers,
Bigkev