Reply To: Strange colors in background of letters- problem

The pink is InDesign's default for “I don't have the font you requested”. Check with Find Font in the Type menu what font is supposed to be there.

The gray and blue — I don't know. Those look like something else than InDesign's “I have a problem here” marker colors. Can you check if they also appear in Preview mode? Perhaps it's something as easy as a very thick underline under all of your text.