External links have yellow background

I recently upgraded to DearPDF Pro Version to gain the ability to make our flipbooks interactive (including clickable links either to external web pages, or to external PDF files which are hosted on Dropbox).

The links work fine, but DearPDF is adding a yellow glow or background to the links which is completely undesirable. It’s visible in every browser including Edge, Chrome, and Firefox. I’ve searched for an answer on how to remove the yellow background from the html links, but can’t find anything.

Please let me know how to do so. Thanks!

Dave