I turned on the text/font format change indicator function (that's not the official name of the setting) and can't turn it off. (Probably because I don't remember where I accessed it to turn it on...I tried Preferences and don't see it there). The function highlights fonts in various colors depending on whichever attributes are changed from the standard settings, such as character spacing (highlights in a blue-green color), special characters like ligatures, hyphens and uppercase words (highlighed in yellow-orange). It is not the blue, pink etc. highlights called "Toggle Style Override Highlighter".
If you know where this seting can be turned off, please let me know and thanks!!!