Are you guys pretty sure that gloss or semi-gloss paint would've been used? I have no particular source for this, but I have always assumed camo-type colors - the greens, browns, olive drabs, greys, etc - would've all been a flat finish. Insiginia colors and artwork, though, I could imagine using a paint with a little more gloss on those.
Is it possible the sheen we're seeing on the horizontal tail is rain, mist, or dew? The day does look overcast, and the weather there was probably often wet?