Not sure if this has been covered yet.

Luke's saber appears to be green in this documentary(which aired on 9/16/77)

It probably coincided with the dissemination of the theatrical prints with the Mono optical track tacked on.

And it I think this documentary used one of these mono prints as the source for it's clips.

Is it possible that the mono prints had a different colour grading(at least in some areas regarding the optical composites)?

From this angle , Lukes lightsaber was composited on without the comfort of an in camera blade:

The optical sample that was to be composited in was greenish in it's tint:

Look at the width of the glow in the following frame(this one without seeker ball composited in):

And now with seeker ball added in:

And here is the final composite:

The saber has a greenish tinge with a possible modicum of blue:

And as it appears in the 2004 DVD:

Does anyone else have this documentary and are the colours similar to what I have shown here?