>>529002735
That's the thing, she doesn't, Toriyama retconned it.
>had teal hair at first, which the anime kept (but only for her, not for her son for some reason)
>quickly changed to purple, was like that for most of the franchise' history
>then changed it to blue for Super and every new design of her or her children coming from Toriyama had this blue hair, not teal, not purple, just blue

>>529002819
See above and don't use the colored edition as an argument. That's not Toriyama's coloring.