I am NC 20, fair asian girl with dark brown eyes.
I LOVE this palette. I tried out the colors in the store and they were very pigmented on my hand and the colors looked really wearable for everyday to brighten up the eyes and draw attention to my dark eyes. Well they do in a very natural way, I just look so much more awake :)
I saw the video on HSN and the before and afters are pretty amazing, they really do make a difference! I look so much more illuminated. The eye bright is AMAZING for brightening the inner corners too! :)
I can imagine that this palette would make darker skin tones (of NC 30 or darker) a bit ashy looking so it is not recommended (IN MY opinion only!) I could be very wrong.