After the iPhone 5S and iPhone 5C, Sonny Dickson has now leaked photos of the unannounced iPad 5 in space grey and silver colors. As with earlier leaks, it is clear that the new iPad with Retina Display will share the same design language as the iPad mini and will come with a thinner bezel.
Apple introduced space grey color option with the iPhone 5S, replacing the black option. Most probably, this one done so to avoid the chipping issue that plagues the iPhone 5 and the space grey shade is probably easier to anodize.
So far, there are no photos of the champagne gold color, but considering the iPhone 5S has it, one will not be surprised if that also shows up sooner than later.