I have some more weathering to do but thanks for the comments.
How close are the Osprey profiles for color matching? I went with "True Blue" from the Skinners Heaven USAAF color resource because it was the closest of the blues listed. Yet it still doesn't match the Osprey profile's blue, IMO.
The profile also shows it as more greenish than brown drab, though I have 3 layers of color here so I can crank up the brownish drab a bit more...