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…