The DisplayFlags property indicates whether the display device is color (versus monochrome), and non-interlaced (versus interlaced). ...

The DisplayFlags property indicates whether the display device is color (versus monochrome), and non-interlaced (versus interlaced). By masking its value with the DM_GRAYSCALE and DM_INTERLACED masks respectively, DisplayFlags indicates whether the display device is color (versus monochrome), and non-interlaced (versus interlaced). The DisplayFlags property contains two bits of information about the display.  
This property has been deprecated in favor of a corresponding property(s) contained in the Win32_VideoController, Win32_DesktopMonitor and//or CIM_VideoControllerResolution