Dio's hermit purple

Lately I've been wondering why tf has dio got hermit purple. I tried searching it up, and saw people saying it was Jonathan's stand.

That doesnt work out: if stands are the phisical manifestation of our combat spirit, how can it exist without jonathan's mind??

Also, i did also read that originally, araki was giving The World every single stand power, but he changed his mind while making Stardust Crusaders. That would also explain why, in that one part where Avdol is getting chased by Dio, his hair became creatures straight from Alien.

So, which one of these is the question? Why?

Lately I've been wondering why tf has dio got hermit purple. I tried searching it up, and saw people saying it was Jonathan's stand.

That doesnt work out: if stands are the phisical manifestation of our combat spirit, how can it exist without jonathan's mind??

Also, i did also read that originally, araki was giving The World every single stand power, but he changed his mind while making Stardust Crusaders. That would also explain why, in that one part where Avdol is getting chased by Dio, his hair became creatures straight from Alien.

So, which one of these is the question? Why?