The reason figures have different colors is due to what time in their comic book life that hero is. Take the Hulk. The yellow band Hulk holds an Avengers tie. The blue band Hulk holds a Defenders tie. This also holds true for DC characters as well. This gives greater power to team oriented characters over single based characters. Special powers are created through team work. A yellow Hulk works with Thor and other Avenger characters. A blue Hulk does not. Try to create teams and get the most out of your characters.
