YES!, actually. I pit primer on the fuselages, wings, and horizontal stabilizers. Revealed a bunch of places I sanded too much. I'll post pics when I get home.
Used gun metal for the base color, feathered some silver on the leading edges of the fan blades like I did the 757, then painted the spinners a good light gray color.
Pratt Whitney JT3D engines for the 707 assembled and puttied. Won't paint till I get better engines for the 747