When Fun. are joined by Janelle Monáe on the stage at the 2012 MTV Movie Awards tonight to perform their inescapable hit song "We Are Young," fans will be treated to a set that has lots of red.

While no one really knows what that means until show day, the look seems reminiscent of another inescapable pop-culture phenomenon [article id="1686324"]"Fifty Shades of Grey."[/article] So when MTV News caught up with the guys at rehearsals for tonight's show, we wanted to know if the erotic book trilogy had any influence over the look of the performance.

"Let's just say 'yes,' " lead singer Nate Ruess laughed, even though the books clearly had nothing to do with their performance.

Guitarist Jack Antonoff added that there was another pop-culture influence. "That and the Billy Joel song 'Shades of Grey,' " he teased. "Those two things together."

Multi-instrumentalist Andrew Dost kept the joke going: "It's inspired by 'The Shining,' " he said. "Red room, red room."

All joking aside, the guys are ready to introduce their live theatrics to an audience that largely knows them from their radio mega-hit "We Are Young." "Anyone who just heard it on the radio and hasn't seen us play it, that's the only goal is to just physically perform it the way it's meant to be interpreted," Antonoff said. "Which is pretty dramatic."

Tonight's performance is just another feather in Fun.'s cap. It's been a huge year for the guys, thanks to the power of "We Are Young," which seemed to take over the world this year. "I think that it's gonna be really exciting. This is kind of like a snowball effect," Ruess said. "And the snowball is very large at this point."

"It's a piece of all that craziness, that's for sure," Antonoff continued. "I think you can say the Movie Awards are a real good extension of what it's been like, just a lot of really crazy stuff and then you put it all together and it makes that whole wild experience."

Want to know what happens when Fun. take the stage tonight? You'll tune have to tune in to the MTV Movie Awards, hosted by [article id="1684832"]Russell Brand[/article] and also featuring performances from [article id="1685921"]the Black Keys, Martin Solveig[/article] and [article id="1685282"]Wiz Khalifa[/article]. It all goes down at the Gibson Amphitheatre in Universal City, California, at 9 p.m. ET/PT tonight.

Head over to MovieAwards.MTV.com to cast your vote for Best Hero and Best Movie now! The "Movie Awards Punk'd Pre-Party" starts at 8 p.m. ET, followed by the 21st annual MTV Movie Awards live tonight at 9 p.m. ET!