Character mistake: When Tracy's mom enters Motormouth Maybelle's place she is surprised to see her daughter. When she calls to her she says, "Tracy Edna Turnband" instead of "Turnblad."
Factual error: In the opening "Good Morning Baltimore" scenes you can see yellow center lines in the streets. This was supposed to be 1962, but yellow lines weren't used in the U.S. until after 1971. (01:00:00 - 04:00:00)
Answer: I believe her hair is also symbolic of white and black integration.