All text highlighted in multiple colors when opening INDD file

I'm with Barb -- the Style Override Highlighter is your friend; learn to use it.

You can disable the Style Override Highlighter by clicking the + icon in the top right corner of the Paragraph Styles panel or the Character Styles panel. That will remove the teal highlighting. I choose to work without overrides so I find the override highlighter invaluable, and always keep it enabled. Your vendor may have chosen to work with overrides, in which case, feel free to disable the highlighting.

And Uwe's answer is entirely on point for the pink highlighting. You are not using the fonts that were choosen by the designer in that document, instead, InDesign is deciding for you which ones to substitute. The vendor can fix this by packaging the file before sending it to you. The package command in InDesign will copy the document, the fonts (outside of CJK and Adobe fonts), and all of the linked graphics. If you glance down at the status bar, you will likely see a red light, which indicates that this file has errors. There may be additional errors (modified links or missing links)  but I suspect you're going to see missing fonts will make up a lot of them. You do want to resolve this before you send this file out for printing.

~Barb

BC15 said: "…the PDF's I create are fine."

Hi BC15,

no, the PDFs will be not fine, because one or more fonts are missing.

You first have to deal with that issue before exporting PDFs.

Example for a missing font ( from my German InDesign ) :

Also the activated Preflight is showing this in detail, font name, characters and page name:

Regards,
Uwe Laubender

( ACP )

You can control the highlighting via Preferences>Composition>Highlight

The pink indicates you haven't the font(s) installed and the blue is the Style Override Highlighter