There isn't much to recommend Mark Millar and Steve McNiven's Civil War miniseries in the first place (which makes it potential adaptation into the third Captain America film a cause for concern), although it did have some nice ideas.
The superheroes of the Marvel universe being pitched against each other in an argument over secret identities and responsibility was a neat concept and, obviously, when you include two of the watchwords of the character, you just know Spider-Man's getting involved. Originally on the pro side of the Superhero Registration Act, Peter Parker wound up revealing his alter ego live on television sending J Jonah Jameson into a fit, and endangering the life of his doddering old Aunt May.
He did, however, team up with Tony Stark, her furnished him with a brand new costume! Which looked like an eleven-year-old's felt tip drawing where he mashed up Spider-Man and Iron Man's costume, only with about half as much charm. It looked like a freakin' Power Ranger.