> The NES is in some sense a composite-only system. While there is an RGB mod, it's quite invasive[...] This is something that a lot of even very plugged into retrogaming people don't really get about the NES and RGB mods. I think it's very counterintuitive for people now that there is no part of the system that operates in actual 'color' information. The NES' video output is composite from start to finish[1], with p…
Take the analog path from NES to TV in that common situation, then the second analog path inside the TV generating the color, then NTSC color/lum separation limitations, and "crisp" or "accurate" is something that couldn't describe the results.
On nesdev.com there's at least one thread where quite a few people are discussing about the best way to capture the color palette from video sources, and argument that there really isn't a "golden palette" because each TV was different and NTSC quirks: a pixel sent to a CRT TV could have different colors depending on its position and the colors/luminance before and after.
So CRT/NTSC fuzziness is part of the memory and nostalgia. I like the NTSC emulation options in FCEUX which do a really good job of the color fringing and smearing that was on CRT TVs and really make it "look" like how it was when I was young.