Recently my fonts on libreoffice documents have been coming out grey. I have changed them on the documents and have changed the settings, but they revert back to grey. How can I stop that?

This is a new problem (for about a week). I noticed it when I printed out a document, and all my documents are for eventual printing out, so I need black font not grey.

Have you noticed that the the title of your question is the whole question? Why don’t you try shorten it and leave something for the main part of the question!