Recognized text may be marked with different colors depending on the OCR results:
Green indicates words in which a spelling or OCR error is suspected.
Red indicates unrecognizable characters. These are represented by a reject character. (A tilde ~ is the default reject character.)
Choose Show Markers in the View menu to display color markers. To hide color markers, choose Show Markers in the View menu again. All text will revert to black.
NOTE: Colors are not exported when you save a document to another file type. All text exports in the default screen color.