Most of the * carriers have at least one aircraft painted in * livery.

The livery closest to the nose indicates which carrier owns it. In this case, it was a UA aircraft.

The original * carriers tend to have only the original 5 plus RG liveries in the "we've duct-taped the airplane together" livery. The newer members have gone for the "cover the airplane with stickers" livery.

The interiors are generally no different from any other aircraft. The carriers do try and move them around their networks to heighten visibility.