One of the plus sides (or down sides?) of playing a role in Jessica Goldberg's tale of club kids gone bad, Hologram Theory, is the Kool Aid colored hair jobs. Showing off their bright locks and new do's are Theory star Joie Susannah Lee ( Mule Bone), Chris Messina, Bill Torres (playing a dye-free filmmaker), Daniel Bess and T.R. Knight (This Lime Tree Bower). Hologram Theory runs at the McGinn/Cazale Theater through April 9.