I currently have a white one, and if you aren't using anything other than (k)epubs and want a small size it works great. Contrast/lightness isn't as nice as the newer screens, esp. obvious with the white bezel (not a good idea since way back with the Sony Librie...)
But finding a black one is like chasing a frickin' unicorn!!
The aforementioned christian bookstore doesn't have any online anymore either (which you find out only after trying to put one in the cart)