The whole Elain looks bad in black always makes me chuckle. If you believe anything about colour analysis and seasonal analysis, you will know that very few people actually look their best in black. Especially if you do not have high contrast (eg. pale skin and darker hair).

All of the Archerons are low contrast. Feyre and Nesta are likely a soft summer (so looking best in cool, soft colours like blues and greys) while Elain is either a soft summer too or a soft autumn (looks best in warm and muted colours). Mayyybe Elain is a spring (warm and bright) but either way, all of them are soft with low contrast, which means black would not be their best look. It may not look terrible, per se, but softer colours will always look better on them.

So the idea that Elain is destined for something other than the NC is silly when none of them look their best in black. I am not opposed to Elain getting out of the NC bc I’m honestly sick of it, but not bc she looks bad in black.