As a graphic designer, I am chiming in to say Zero One is closer to fluorescent yellow than fluorescent green.

He's definitely near the line, but I'd say he still falls on the yellow side.

Let's just split the difference and say he's a fluorescent yellow-green rather than either or.

Ignoring the subjectivity of the human eye (and cameras) for a second, I'd just like to point out that, as far as I know, Zero-One has been consistently referred to as yellow in every official capacity. They treated it as a selling point at the press conference IIRC, and that guy who runs the amusement park in the premiere says it was saved by a "mysterious yellow hero".

A column about Zero-One in Quarterly Magazine Uchusen vol. 166 has gone on record to say the bright parts of Kamen Rider Zero-One are indeed fluorescent yellow as they described the suit being "a jet black base suit with fluorescent yellow protectors". And it most likely these articles at the very least get proof-read by clients which is in this case Bandai and Toei so surely the writer did not pull fluorescent yellow randomly. Now to be fair, it is a tricky color to define especially when other elements such as the lighting used when shooting promo shots of the suit or merch comes to play. And like I said before, I too at one point considered it to be a green hue as well until promotional material started defining it as fluorescent yellow. So TL;DR it's fluorescent yellow.

im such a sucker for having conversations like this cuz its so adorablely nerdy but darnit its valid lol
reminds me of random spiderman or sonic conversations or people who color hatsune mikus hair green in fanart (which drives me nutsssss btw)
ahhh color theory an eyes are weird

btw i googled it. yeah zero ones just florescent yellow. he's totally yellow just in certain angles an lightning he looks greenish cuz thats how florescent works i guess, funny enough one just has to look up a figureart to determine this.

Depends if he uses MetalCluster to defeat the final villain.

i love how earlyer in this thread peeps were talking about how pointless final forms are but didnt mention metal cluster.
when you have a tokusatsu hero that essentially has gaaras sand powers but literally with nanomachines....potentially there'd be no reason for aruto to lose cuz nobody could touch him.
metal cluster is like my second favorite when it comes to how fun toku power scaling is, not counting zio or black RX hyper kabuto is still the man tho

To be honest, I'd expected more out the 1st Reiwa Kamen Rider. I didn't think Zero-Two was gonna be the final form; maybe a Hyper Battle DVD form or even a movie form. I'm very disappointed!

The only way they can make this up to fans is one of two ways:
1. Make Zero-Two the new base form and make it compatible with the other Progrizekeys in order to possibly do a Zero-Two Metal Cluster Hopper.

2. Do a complete change in the design even if we gotta wait for a little while like they did with the resdesign of Sonic The Hedgehog.

Yeah a complete redesign isn't happening just cause some westerners are upset they didn't get a bombastic final form.

You're asking too much for a show that's nearing it's ending arc, suit design for Zero-One should be wrapped up by now save for any V-Cinema stuff they have planned.

They've got nothing to make up, clearly they're moving away from the overly busy final forms that we've been getting for most Heisei Riders. Reiwa is a new era, they're gonna be experimental.