@Dr. Rabbit
It’s gray, because apparently in this scene the outline is a border of her teeth rather than her skin.
It looks orange because of the contrast with blue.
Wait, why does it look like Trixie is wearing orange lipstick? If ponies wore lipstick (Which I wouldn’t mind, on special occasions of course)I think she would look better with purple. I’d never wash my face again!
Yes, I see now.
@Lucky Shot
They’d better watch out!!
It’s gray, because apparently in this scene the outline is a border of her teeth rather than her skin.
It looks orange because of the contrast with blue.