So, I am a closet football fan. I sit here in my #18 Manning Jersey (I'll miss you Peyton...) and I have found a really cool website.
This site has all of the NFL teams logo/insignias redesigned "that pay tribute to each team's history and geography in a period-specific aesthetic that glorifies the Vince Lombardi-era over the Cold-Activated-era. This is not an exercise in nostalgia but an interpretation of the league's founding principles through the symbols that we, as football fans, identify with most."
I personally like the new insignia for the Colts better than the one they use now. http://gridiron-league.com/INDIANAPOLIS
Enjoy, even if your not a football fan, the design is so clean and fresh, you'll enjoy that aspect for sure, and I bet it will even make you want to watch a game!