Included in this listing is an image of Dan Hughes' original backglass artwork for this game, sketched before it was determined whether this would be a Williams or a Bally game. We were alerted to two examples of an alternate cabinet art version (not pictured here), located in the Netherlands, and one example (pictured here) located in Canada. The right side of these cabinets, for instance, did not show a gradation from orange to yellow behind the race cars but had instead a solid red color there, and the black color in the area of the backbox hinge had a solid yellow border color. Upon closer comparison to the more common cabinet, the race car tires appeared to be a darker blue, and even the playfield's blue color seemed to be darker, if not royal purple.Mark Weyna explained much about what we saw:There was a BUNCH of color changing going on with the playfield and cabinet very late in the development. The backglass pretty much stayed the same. The changes were based on our German distributor commenting on the color scheme and relating it to "baby colors" which started a wave of color changing. I have a cabinet test panel on Masonite that is the full red with more purplish tires. My own Indy 500 game was the photoshoot machine for the brochure, which was a VERY early sample run game, and it has the orange to yellow treatment. Also, to add to the confusion, the Indy's seem to have faded more than other cabinets of the era... There where also at least two playfield color versions - I have a rich red to purple NOS playfield and my game (photoshoot, remember) is more orange to lighter blue towards the bottom. I think the protos were done one way, the sample run done another way (like my game), and the production games were a third version.