Do think they should've casted a black actress to play the evil lady ... Not very woke of you. You are aware that she's purple because she's black ... Right?
"This is predominantly because purple is easier to shade quickly and thus give the appearance of three-dimensionality; solid black objects in animation (and Real Life; see Vantablack ) lack contours and look very flat."
https://tvtropes.org/pmwiki/pmwiki.php/Main/PurpleIsTheNewBlack