I dunno...

Yann does have a valid point.  Style and lighting 
does vary from episode to episode.  Those two 
cels might very well be legitimate.  On the other 
hand, I don't remember a style like that used for 
Yue in the CCS episodes I've seen.

Best to follow your heart (do you want a Yue 
painted in that style or not?), as well as 
looking at the screencaps that other people 
provide.