There isn't much to be seen under the wing of an F8U when it is raised, even the underside of the wing itself.
Note that there was only one actuator to raise and lower the wing (the F8U-3 had two).
The top of the fuselage can barely be seen although this is what it looks like with the wing removed, looking forward from the pivot point.
Tom Weinel has done some research and concluded that the area was green up through the early 1960s (e.g. F-8Es) and then painted white during Navy overhaul at some point or when the F-8s were rebuilt by Vought.