This is needed for Okular's settings dialog so that all the icons can be colorful. The current monochrome icon used by Okular is `draw-freehand`, which depicts a pencil drawing a curved line. We could re-use that iconography for the colorful version, or create a more annotation-specific colorful version and and an accompanying monochrome version (`edit-annotate`?).
https://invent.kde.org/frameworks/breeze-icons/-/merge_requests/161