Who was it that did the sample eye test for Rey? I think having her Sith eyes during the hiss would be a complement to everything described there. I’d also be interested to see it applied to her vision.
I did a quick test last night. I didn’t bother with tracking it or anything, so it’s just a picture, and I will happily hand the reigns to someone with more experience color grading; but this is a rough idea of what I was thinking.