GALLATIN, Tenn. - You don't have to be around Joslyn Barahona long to know teal is one of her favorite colors. As an aspiring marine biologist it's fitting for her, but teal is one of a few hair colors she's sported in the past. "Changed it so many times. It's just, it's addicting," she laughed. Joslyn can smile about it now, but Friday was a much different story. It was graduation day at Gallatin High School. "I was looking forward to it because I wanted to walk with my class even though I finished in December," she said. Joslyn has been preparing to transfer to a university and has been taking classes at Vol State since she graduated early. "That's why I changed my hair funky because I finished high school," said Joslyn. It wasn't until the graduation rehearsal she learned her hair color was a problem. "I looked at the seating chart, saw where I was supposed to sit, went to go sit down, and then one teac...