Okay, I'll take this stuff one at a time, but starting with the most recent post, if you actually analyze the color channels of that still, you'll see it is indeed in the red family, with the green and blue channels very similar (and certainly not more green, as it'd need to be if it was amber/yellow).
When Don showed me the originals at the archives, the lens colors was the first thing I checked, and they were undoubtedly gray with that slight lean brown he was talking about. We're just not sure those are the same lenses seen in these scenes from ANH. I'm putting together a video which I'll post soon to illustrate a couple things, but let's be clear that all we're confirming here in step 1 is what color they ultimately photographed as. I'm putting all the money on red, for the aforementioned, and some other reasons I'll illustrate in the video. But the next question will be what was contributing to the red - David's skin, or the lenses themselves. As you'll see, there are almost equal arguments for both, photographically, and it's absolutely true that gray lenses could appear this reddish hue because of contributions from the skin tone underneath. Ultimately, what I'm going to have to do is simulate the setups in an unbiased spectral renderer so we can get a better idea for how the actual colors played out.
Anyway, video to follow.
And Don, thanks for the props, I'll get the check out to you as usual :$
_Mike
