^ Being red-green colorblind, I always have an app on hand for this... and apparently her hair has an RGB value of 156, 174, 161. Which is pretty close to grey (for various shades of grey, all values would be equal), but it's also slightly greenish.
Now, if I was to speculate as to why... I couldn't. Art is far too subjective. Best guess is the artist thought it looked good.
^Interesting to know, thanks. Yeah there's variety and nuance to the color spectrum so I'm not surprised that while it reads grey for me, that it also reads differently for someone else. I've seen various arguments about colors online and ultimately people view things differently, so people shouldn't argue lol
^They did a collab stream on Bao's channel last year, I haven't seen it and the VOD isn't on Bao's channel anymore from the look of it, but have this animated short someone made from the stream https://youtu.be/MKV7zWxtkqc?si=yk6Pe1KygqZZtifN