DARK GRAY Materia

L: Dammit, this materia isn't actually black! It's just really really really really really really really really really really really really really really really dark gray! That's why it isn't working! (Throws Dark Gray materia at wall)
(materia explodes when it hits the wall, creating a hole big enough for our heroes to escape through)
L: Yippee! We're free! Since there was only one guard and he's dead now, we can escape ! I'm gonna stop using exclamation points now! I'm even starting to annoy myself!