Spaced Ranger said:
Would Star Wars "clapper" clips help as definitive color references and do we have them like the Star Trek community has (the black & white board would help, but one with a color strip would be better)?
I don't think so. It would of course give you a definitive idea of what the colours on set really were, but SW was shot with a variety of filters, lit specifcally, and, as has been pointed out, intentionally graded after the thing was assembled. Knowing the grey point wouldn't give you any idea of what the film looked like when Lucas was ready to send it for duplication.