Some more renders ...
(on this one, turn down your monitor's brightness and turn up the contrast for best effect)
Keeping in mind .. the PCIN renders haven't been optimized for dithering ... in areas where the PF0-PF3 colors intersect, checkerboard dithering can be done to reduce the flicker.
The super 9 pic is a double-interlaced Graphics 9, but the BAK color is changed every character line to get a wider color range.
I don't know if a screenshot of real hardware will suffice, but maybe a video of it perhaps ... or some way to blend the frames.