Why does anime Bulma have green-blue hair?

[Tyro]

It seems like such an odd choice because it's only on the artwork appearing between chapters #001-002. Every other piece of artwork released between chapters #003-064 shows her with purple hair. Why did the animation team go with the original colors even though Toriyama was consistently using purple?

[TheGmGoken]

Perhaps to make her stand out? Or they went with the first colour they saw and only started animating it. With this they couldn't change it. Sad because Bulma with Purple hair looks awesome in path to power

[Tyro]

Perhaps to make her stand out? Or they went with the first colour they saw and only started animating it. With this they couldn't change it. Sad because Bulma with Purple hair looks awesome in path to power

I doubt they started animating as early as chapter 2. It wasn't until after the Search for the Dragon Balls arc that Dragon Ball started gaining popularity.

[Cold Skin]

It was obviously their choice given the time that had ellapsed since the beginning of the manga, maybe they thought it looked better?

They keep doing this even nowadays, changing colors likely because they think it's better than what the author chose: even the hair of Super Saiyan God were changed recently, when Toriyama's original artwork and comments make his vision of red hair pretty clear.

So Toei just change colors as they see fit because they decide it looks better.
The problem is also that they can't seem to take the risk to detach themselves from the colors they once chose, the only time they did that was with The Way to the Strongest, with Bulma's hair. Maybe they'll do it only in the case of a full remake with a fully new title (after all, the rest - GT, Battle of Gods, the movies - were supposed to be in continuity with the anime when it comes to style, so that wouldn't make sense to suddenly change some colors).

[Darknat]

the only time they did that was with The Way to the Strongest, with Bulma's hair.

They also did it with Vegeta's original colors.

[Cold Skin]

^ Yes it's true, which shows they could do it.
I wonder why they changed Vegeta's colors. Was it some sort of backlash from fans? Or did a director say "what the hell are those colors?! I know we can't change colors and it doesn't make sense, but we HAVE TO this time"?

They usually don't get back once they have decided on their own colors, so I wonder why it was changed to manga-friendly colors for this one time!

[TheGmGoken]

Maybe cause Vegeta original anime colour was ugly. Or they saw the mistake

[Attitudefan]

^ Yes it's true, which shows they could do it.
I wonder why they changed Vegeta's colors. Was it some sort of backlash from fans? Or did a director say "what the hell are those colors?! I know we can't change colors and it doesn't make sense, but we HAVE TO this time"?

They usually don't get back once they have decided on their own colors, so I wonder why it was changed to manga-friendly colors for this one time!

It's very strange indeed since he was hyped up with those colours up until the very episode he lands on Earth. Nappa also had his colour palette changed too. He was wearing the same armour colours as Raditz.

Why the change, and why wait until they get to Earth for that change?

[ParkerAL]

I really dislike Bulma with purple hair, so I'm glad they kept the colors from the first few chapters. I suppose the directors just felt it looked better (which it does, at least to my eyes). Both colors are equally ridiculous as hair colors, but at least the light blue has an aesthetically cool look. I alway associate the color purple with goofy stuff like Barney the Dinosaur.

[Cold Skin]

^ Then Trunks should logically have blue hair too, and you should likely think he'd look better with blue hair too, shouldn't you?
(try to picture it in your mind and see if I'm right or not)

Incidentally, that's exactly what Toriyama did with Battle of Gods. To him, Trunks naturally has the same hair color than Bulma (he essentially physically looks like a male reincarnation of Bulma). So when he tried to stick to the anime colors for the design, he just naturally considered Trunks obviously has blue hair too, which I find pretty funny!

Trying to stick to the anime colors, the man still did non-anime colors! He's just not meant for that!

[Gokuden]

Because of Bulma's light skin tone, the change from purple to teal, or teal to purple had no effect on her looks.

Now, take a tanned Trunks, and give him teal hair, what do you get? You get some creep out of Zexal.