The NES' composite display is just dirty. You can see this most on 50% dithered patterns of colours.. they do not look even, and are sometimes washed out and fringe. Blah.
There would usually be no vertical fringing because fringing happens horizontally across pixels. Two vertical lines on a television are actually several milliseconds apart from each other (which is a long time in videogame terms.)
Ah well, at least the NES' display isn't as bad as the Genesis whose colour fringing made rainbows all over the screen and made bright reds blocky and ugly. :-P
In case you didn't notice, this message is not written in technical terms.
Chris Covell (firstname.lastname@example.org)
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