Good point(s), CatBus. I'll have to ponder this further.
It might be worthwhile for us to come up with a quick test pattern.
How's the following?
720: {red 8px} {green 8px} {blue 688px} {green 8px} {red 8px}
704: {red 8px} {green 8px} {blue 672px} {green 8px} {red 8px}