Colour scheme needs thinking about. All the photos I have seen look to be all over silver. Probably natural metal finish on the hull and silver dope on the wings.
However that's a bit boring has anyone seen an alternative colour scheme. They were out of service early 1939 but I wonder if they were painted Coastal Command colours during the Munich crisis.
Or I can do a "my model my colours" what if and extend the service life into wartime service and strap some anti-submarine bombs under the wings. Maybe some ASV Yagi aerials as well.