Like Josukarity, Jotaro’s colors were based on Twilight’s gala dress. Similarly Hermes’ colors were based on Spitfire’s dress uniform, whereas Kiss used her Wonderbolts uniform.
Again, the vectors are there for comparison’s sake.
snort
EDIT: I have already uploaded My Little JoJo part 8, but since it seems to be invisible at the moment, I’ve provided a direct link to it instead…
Well it’s colors are more consistent now. All Star Battle seems to be pretty much the canon color schemes for all the characters. (Except Joseph, dude is too fabulous to stick to one clothing style.)
Star Platinum has never had a consistent color. I like to think that it changes colors whenever Jotaro has a new style.
Starlestia Platinum, what with The Sun being a star and all…