I'm guessing the orig college ID mug is something the news media dug up to get on the air asap since the Aurora PD stated they didn't know when they would release his booking mug shot. As far as looking computer generated - my guess is that a lot of quality was lost in reproduction/editing for distribution; and college, corporate & driver's license photo ID's are pretty crappy quality-wise to begin with. Google "James Holmes" and select images - you'll see some images of the same ID that don't look computered generated. Re the different jail garb - I don't work for any judicial system so I'm best guessing here, but it's seems reasonable that different levels of detainees have different jumpers. When he was booked and his mug taken, he could have been a city/county detainee at that time and then upgraded to a federal detainee by the time he had to make his first court appearance.