Well, in the wake of continued sitings to the contrary (for example, the Manic Panic tie in with the movie), The Beat finally confirms that Ultraviolet is not a comic book film. They don't say according to who, but they do say that Sony is marketing it as if it really were (making it sound like that was the intent all along). To cap it all off, if you take a look at the official site now, you can see an on-line comic and game (which are worth a look if you're interested). In the background, there are clips of the concept art I mentioned before that make it really look like a comic.
So was that the design from the beginning, or was it just the rumors of comic books that turned into a little bit more?