Hi All, maybe not exactly what is asked here but because colour accuracy is the topic here and this question is professionally very important for me as well.
As a rule, and only where colour accuracy is priority #1 which happens quite often with me: In these cases I never export a pixel image out of SkUp but always a PDF (with or without lines). I import this PDF into Adobe Illustrator (or any similar tool), automatically select the relevant fill colours and then, within Adobe Illustrator, convert them to the exactly calibrated colours of our own specific Adobe colour profile. If necessary, I also combine this (still rather dull) PDFs within Adobe Illustrator with an ambient occlusion or shadow rendering of my model which I overlay multiplying there.
😉 I hope this method helps...
💡 LightUp 7.1 | SketchUp's only real-time renderer that uses object-based rendering
Download Trial
W