I did a couple of blogs recently on the greatest Qb's and RB's in NFL history. The Colts really haven't had alot of Hall of fame type players on the defensive side of the ball in their history. On D-line there was Gino Marchetti and Art Donovan (from the Baltimore days) and Freeney and Mathis of the current team. At LB there was Mike Curtis and Ted Hendricks, in the secondary there really hasn't been many of significance, hard to tell what could have been for Bob Sanders and Bubba smith who both had the makings of that type of player, cut short by injuries.
On the offensive side of the ball it gets way more impressive. The O-line had a few notibles...Jim Parker, Bob Vogel, Ray Donaldson and Jeff Saturday, at TE, there was John Mackey and although Dallas Clark didn't have many Pro bowl appearances , he is worth mentioning.
Then it's get real impressive, at WR, there was Raymond Berry, who when he retired was considered by most, the best WR-ever! Marvin Harrison, I felt had a chance to give Jerry Rice a run for his career stats, but retired at age 36 ( for whatever reason(s) 2 of the very best -ever, that's pretty impressive! And now Reggie Wayne who when it's all said and done, should be a Hall of famer
At RB, on my list, I had 3 Colts in the top 8 in NFL history (Dickerson-Faulk-James) even if some don't agree, they have to be considered as some of the best -ever and that doesn't even include Hall of famer Lenny Moore.
At QB, it gets pretty amazing! I had Unitas and Peyton in my top 5-ever and I have made it known I feel Andrew Luck, will retire as the very best who ever played the game, when that time comes, it can be said that maybe the 3 best QB's who ever played, wore the horseshoe. You can throw Bert Jones into that conversation, as a player who was maybe one of the most gifted NFL QB's ever, who also saw a short injury filled career. Taking a look at those 3 skilled "glamour" positions and knowing that there are 32 NFL teams, to have that kind of representation, by 1 team, is remarkable!!
FYI- in Unitas' 17 year career the Colts went to 5 championship games, winning 3 times
In Peyton's 13 year (playing ) career , the Colts went to 3 (AFC) championship game, played in 2 super bowls and had 1 championship.