I've painted this Gladiator in the Dark Earth/Dark Green livery it would have borne for home service at the beginning of World War II. I don't know if Gladiators where painted the half-and-half black and white on their undersides that other fighters wore; but since, as a tabletop gaming model, it will almost never be seen from underneath I haven't worried about it at all.
It's been printed in FDM on my Ender 3, and the surface detail on the fuselage ribbing is pretty rugged. I think I could probably get better results by rearranging its orientation on the print bed and printing it in a single piece, though that would mean a bit of pre-supporting of the STL in Blender for the sake of reliability. I may or may not ever get around to doing that. That should also help with the crappy printing of the undercarriage.
The STLs for this model are available at
https://www.wargaming3d.com/product/gloster-gladiator-1144/