Great Effects!!

Wow! The effects in this movie were well beyond what I expected. The "Aura" was a very cool idea and the colors were unique and appealing to the eye. I also really liked the "Fire Trails" that sped by the screen during the knife fight. I would love to see a behind-the-scenes on how these effects were done. Will there be something of the kind on the DVD release? Does anyone know? Thanks :)