Whether Paramore's "Misery Business" automatically played on your Myspace page or you've only listened to the band's songs once or twice, you probably know who Hayley Williams is. And if you don't know the lead singer's name, you probably know exactly what she looks like. Her vibrant hair colors and eye makeup of the early 2000s pre-dated the rainbow hair and makeup trends all over our Instagram feeds these days.

Full disclosure: I fall into the second category. Paramore was far from being the soundtrack to my teenage angst. I was more of a Jonas Brothers fan girl at the time when Paramore blew up in 2007. However, I was fully aware of Williams's strong, rebellious look. I admired how her focus wasn't — and still isn't — on being conventionally pretty. Back when fiery asymmetrical hair was her signature style, she inspired the kids around me to be bold with their style and feel confident not fitting into the prim-and-proper mold of suburbia.

Ten years later, Williams is still a force to be reckoned with in a beauty sense. She started her own line of bold hair dyes called Good Dye Young. Ironically, her hair is a gorgeous shade of platinum blonde at the moment. Now, her makeup has suddenly taken center stage. (Pun intended.) YouTube is filled with tutorials for recreating her recent looks from music videos and performances. To find out the stories behind those looks and how Williams's makeup has evolved over the past decade, I FaceTimed with her right-hand man, Brian O'Conner. Not only is he the co-founder of Good Dye Young, he's also done her hair and makeup for the past 10 years.

"I’ve done her hair since 'Riot' — right before 'Misery Business' came out," he tells me from backstage as Williams does a sound check for the next stop on Paramore's European tour. "From then on, any hair cut, color, and styling have pretty much been me. For probably five or six years now, I’ve been doing her makeup. At this point, everything — as far as hair and makeup goes — has been me." This includes photo shoots, press tours, and performances, making it clear O'Connor has been very, very busy.

In the past, O'Connor went for cleaner, sharper lines with what he considers her "crazier" looks. "This time, it’s a lot less about winged liner or anything like that," he adds. In fact, through the past 10 years, he's taken Williams's look from ultimate emo girl to retro realness.