"Everybody was like, 'wow, look at Ariel's hair. It looks so pretty.' And then the teacher was like, 'you know I'm going to have to report this.' I was like, 'report what?' And she was like, 'your hair,'" Davila said.
Her parents were okay with the blue hair, and they say they are now upset her daughter is being punished for self-expression.
"It's kind of something that makes me mad. It angers me," her father Antonio Rogers said.
The school handbook includes a section on dress code that specifically refers to blue and red.
"Those are gang affiliated colors," said Theresa Myers with Greeley-Evans School District 6. "Brentwood has a policy specific to hair color, which states that no student can die their hair unnaturally red or blue."
Myers says the middle school student wasn't suspended, she was simply asked to leave school until she dyed her hair again to something besides blue or red.
"This has nothing to do with punishing the girl, we absolutely do not have any suspicion that she's affiliated with a gang, but she could become a target of a gang because of this color," Myers said.
Davila was allowed to return to school on the condition she change her hair by next Tuesday.
"It's not acceptable for me," Rogers said.
He wants an apology from the school and says his daughter won't be dyeing her hair again to comply with the school.
"What the actual school did themselves was inappropriate. There's nothing that we want more - me and my wife want more - than for them to at least publicly apologize to her, for making her feel lower than life," Rogers said.
Back in September, a Greeley student was sent home for wearing a Peyton Manning jersey because of a similar school dress code issue that related to the numbers on the jersey.
(KUSA-TV © 2013 Multimedia Holdings Corporation)