Source : Free On-Line Dictionary of Computing

four-colour glossies
     
        1. Literature created by {marketroid}s that allegedly contains
        technical specs but which is in fact as superficial as
        possible without being totally {content-free}.  "Forget the
        four-colour glossies, give me the tech ref manuals."  Often
        applied as an indication of superficiality even when the
        material is printed on ordinary paper in black and white.
        Four-colour-glossy manuals are *never* useful for finding a
        problem.
     
        2. [rare] Applied by extension to manual pages that don't
        contain enough information to diagnose why the program doesn't
        produce the expected or desired output.