The hot air balloon is the oldest successful human-carrying flight technology. It is part of a class of aircraft known as balloon aircraft. On November 21, 1783, in Annonay, France, the first untethered manned flight was performed by Jean-François Pilâtre de Rozier and François Laurent d'Arlandes in a hot air balloon created on December 14, 1782 by the Montgolfier brothers. Hot air balloons that can be propelled through the air rather than just being pushed along by the wind are known as airships or, more specifically, thermal airships.
In The Great Muppet Caper, Kermit, Fozzie and Gonzo are first seen flying in a hot air balloon as the opening credits show up. After the credits are over, Fozzie asks how the movie starts, to which Kermit replies that they pull on a rope. Fozzie complies, also causing the hot air to go out of the balloon, which causes them to fall down into a busy street, leading up to the "Hey a Movie!" number.
As seen in the film, the hot air balloon has a variety of colors on it and a pattern to go with it: light green, purple, yellow, red, yellow, pink/green, yellow, red, purple and green. The whole sequence was shot in Albuquerque, New Mexico, famous for its annual Hot Air Balloon Festival.