I have been reading alot, and I mean ALOT, about color, and yet I still haven't quite figured it out. I looked at an EightStar I color diamond today, and it looked great. I did not at all look any more yellow than "A Cut Above" that was an E color. However, at the same time it was very difficult to notice a difference in Brilliance, Fire, and Scint. So my question is.....Can a lower color grade (E compared to I), even if it doesn't look any more "yellow", affect the appearance of brilliance, fire, and scint?What is everyone's opinion on where the human eye stops noticing the difference in color grades?