different color for point inside or outside given confidence interval (geom_confidence_tern)

[MafGal]

Dear @nicholasehamilton
Very nice package, thanks a lot!

I'm using ggtern with points and drawing a circle/ellipse for the 95% CI using geom_confidence_tern, this works nicely.
Would it be possible to color the points inside the ellipse in a different color from the ones outside?
And then also to know which are the point outside and add text labels?

Thank you very much in advance,
Mafalda.