First of all great work and thank you very much!
I was testing out the callout annotation and whenever I export the PDF, the fill color in the annotation is black, which should not be the case.
I created a simple callout annotation

It exports with a black fill colour:

First of all great work and thank you very much!
I was testing out the callout annotation and whenever I export the PDF, the fill color in the annotation is black, which should not be the case.
I created a simple callout annotation

It exports with a black fill colour: