Some of these alternate helmet designs, created by artist and graphic designer Dylan Young, are cool as hell. Others, not so much. They're all really fun to look at, though, and isn't that what matters?
You can see a full-size Imgur gallery here (with some slight differences from ones on the grid Young tweeted, above). I'm a big fan of the "oversized logo on monochrome background" concept, like the Bills, Eagles, and Colts. Less so of the busier ones, like the Giants or Dolphins. I'm repelled by his Seahawks helmet, and horrified by the knowledge that it's probably not so far away from reality. I'm oddly intrigued by that Chargers powder blue number.