He didn't say that Jinbe's colour was originally blue, I understand the statement to mean that he struggled with associating him with a different colour when the blue skin is so apparent and overpowering. The first thing you'd think when looking at Jinbe is "blue". But that doesn't mean blue was actually his official colour.
Obviously nothing is set in stone. No one ever said that it was in the first place. Again, you're arguing with ghosts.
Blue seemed like Jinbe's colour. But it never actually was. Oda never outright said Jinbe's colour is blue. When I say Carrot is lime, that's just a likely assumption based on the repeated association of her with the colour. It's not confirmed until Oda says so. Jinbe has never once been given a blue outfit AFAIK.
Obviously nothing is set in stone. No one ever said that it was in the first place. Again, you're arguing with ghosts.
Blue seemed like Jinbe's colour. But it never actually was. Oda never outright said Jinbe's colour is blue. When I say Carrot is lime, that's just a likely assumption based on the repeated association of her with the colour. It's not confirmed until Oda says so. Jinbe has never once been given a blue outfit AFAIK.
Oda was having a hard time figuring out Jinbe's SH color cause all appropriate colors were already taken.
This means that for any non SH, their supposed color scheme is irrelevant and not an argument against them joining. Oda will slap any color on them to fit in like he did with Jinbe and that random ass yellow shade.
The color scheme doesn't help Carrot much nor does it detract from Yamato(please don't focus on this saying "I've said anything about Yamato!" cause it's that's not the point).