Cassie had had to put a bit of thought into her costume. She wasn't sure what exactly the opposite of 'gray' was, after all. So she thought of the one thing she'd least like to be seen publically in, that would still be fun to wear when she was drunk, and landed on 'pinup girl'. Her hair was appropriately flipped, the corset and garter combination just concealing enough to have her comfortable in the crowd.
She made her way over to one of the seating areas and dropped down, willing to just watch for the time being, until someone she knew came along.