@Sheep,
Did you get a chance to find the Odyssey2 templates? I've started messing around with Photoshop and I converted the only Atari 2600 covers I had that weren't in the silver format.
Here's an example. I converted this:

into this:

Still needs some work. It could use a better picture on the front and actual in game footage on the back as most of the other covers have, but it's a start. I doubt that I will ever be converting raws into good looking covers, but I'm hoping that I can take already created covers and convert them into styles that are consistent with my collection. I've also converted all of my Game Boy, Game Boy Color, and Game Boy Advance covers into the silver logo style which I preferred but which doesn't seem to be that common.