Risk aside,one major appeal of graphic novels for movie studio is that the visual format allows them to see what the movie could look like before they approve it.This can be a great advantage over a traditional script, which requires the reader to imagine the characters and setting. Having a pre-defined style has also led to the creation of some very unique movies. Two great examples of graphic novels that had their style translated to the screen are Frank Miller's Sin City and 300. The film adaption of Sincity retains the original story's dark look and feel because the directors -Miller and Robert - shot it in a shadowy black and white style with only certain colors allowed,such as the bright yellow of the main villian