First, a stencil needed to be secured to the top of the right wing and the underside of the left wing.
Then the wings were moved into the paint booth, wrapped to protect the areas not needing paint, and the surface to be painted was scuffed for better paint adherence. At that point the stenciled area was shot with red paint.
There's a very good possibility that the wings will soon be installed on the fuselage. Stay tuned.