CMYK

This is CMYK! They are a math rock band based in Dublin (though Zed is the only one who's actually Irish) that does occasional covers of Elvis songs. Zed's on guitar, Carmen drums, Delano vocals, and Enrique is the bassist (who is apparently jealous of not being lead guitar and thus mopey all the time).

...Actually, they're my Rock Band Unplugged band. Zed is a lot like Eli. Except with a top hat.

Their clothes match the CMYK system too, though this was actually entirely by accident, but an awesome accident.