On the AU blue pants/helment UA actually sent Auburn blue pants for the Clemson game because of a lot of rumors circulating on the internet and Auburn regected the pants also one Grad Assistant made a blue helment but it was latter removed of the AU logos and stripes by Chizik himself and he has came out and said that he will not do any major changes to AU's uni's snice we have worn the same design for a very long time and the only change is going from those UGLY black shoes/socks back to white shoes and socks which are 100x better and what was part of the original AU uni back in the day. So its more of a tradition type thing the same as Bama wouldnt ever wear red pants (or would they?)
This was the one and only blue AU helmet
http://t2.gstatic.com/images?q=tbn:A...mWwO-TcI14mX5Q
Also a photoshoped image of the all blues
http://t2.gstatic.com/images?q=tbn:A...GoDNXEAPLgKUQg