We're working on officially licensed shirts and plan to have many more coming in the future. As of now we have 5 designs and they are all on the front of the shirt. If you want the design on the back, we can print it that way (advantage of digital printing) just ask us or send us a message after your order. We can also put the designs on most any color shirt.
FYI: We've modeled these off of original promo shirts from Bally and Williams which had the designs on the front.
I've been working on art for some more shirts, and if you guys want a Williams logo on the back and small logo on the front, I've already been working on that, but don't have it approved by legal yet (I'm getting ready to send another batch of shirts to them).
Greg
PinballSWAG.com