Everyone is asking the same thing. There is so much confusion and rumors and even after years I don't think there has been an official explanation.
It's supposed to be the same Trunks from DBZ, not from another timeline. Also he wasn't even blue haired in the manga. His kid counterpart's hair is still purple. Now it's blue too, im the SuperHero movie where he's grown up he now has blue hair too.
What is going on?
That's not the only thing that has changed colors though. Fat buu's kamehameha in a later saga is now yellow instead of pink.
Some people in the production are probably color blind.
It's supposed to be the same Trunks from DBZ, not from another timeline. Also he wasn't even blue haired in the manga. His kid counterpart's hair is still purple. Now it's blue too, im the SuperHero movie where he's grown up he now has blue hair too.
What is going on?
That's not the only thing that has changed colors though. Fat buu's kamehameha in a later saga is now yellow instead of pink.
Some people in the production are probably color blind.