Comment 30 for bug 1859632

I'll probably have to look and see if we can confirm that this is the problem.

maybe a test app that generates all the annotation types ...

I'm working on a separate project that can export the annotations as JSON from PDF.js and make them machine readable.

I might be able to include the colors there so that we could have a unit test or some way to verify that they work.

poppler might already have some options for this.