[old_tv_nut]

Oops - got off the track a bit talking about the composite version. Now I can't recall if the composite version also had RGB inputs in addition to the composite input.

One thing I think I recall about color accuracy in the composite version - they used the output of the R-Y and B-Y color difference demodulators to measure the burst phase (R-Y should be zero on burst) and therefore can have no phase error between the PLL and the demods.