Harwood's circuit did not affect chroma phase outside a selected small range of orangish hues, which avoided Greenish tinges both to white faces and interestingly to black faces. Greens were not affected. There were probably other auto flesh tone adjustment circuits, some of which may have tinkered with chroma carrier phase. The auto flesh tone adjustment tended to make faces look more alike in color and faces lost a certain live look to my eye. Al ----- Original Message ----- From: flyback1 To: opendtv@xxxxxxxxxxxxx Sent: Friday, December 15, 2006 3:44 PM Subject: [opendtv] Re: PAL Allen Le Roy Limberg wrote: In the 70's Leopold Harwood developed circuitry that adjusted flesh tones automatically for NTSC receivers.Auto flesh tone was probably a good thing for most consumer TVs but it worked at the expense of other colors in the picture. Greens in sets with auto flesh tone turned on usually looked a muddy brownish green and reds were orange-ish.