Nah, not an adrenaline either. Not a dark either, I've been following those since I started playing (I own one, and I had a Rock IR3 too), never seen one like that before. Think it must be some type of SE, like Manike said. I've only ever seen three SE patterns before, but it doesn't match anything else, so if it's a production run marker, it must be an SE. And note the "if" in that last sentence... could be a custom job?