Point Annotation

I would like to add point annotation. Right now I add scattered series to simulate the behavior but much rather use annotation since that's what it is.

I tried using rectangle annotation but the rectangle resizes as the user zooms in and out. I tried image annotation with a small rectangle, however that doesn't work since its color is static and cannot be changed during run time.

Is there an easy way of adding point annotation on a plot?

It is quite easy to create a new annotation class. See the implementation of the EllipseAnnotation! To draw a fixed size point, the width/height of the ellipse should not be transformed.

I'm starting to think extending the annotation class is the way to go as well. Thank you