This has a great deal of symbolic significance to the Four Horsemen of the Apocalypse as the horsemen could be interpreted to represent the Sun's energy riding upon the four elements of the earth which serves as a media for its expression. The Horsemen might not be horsemen at all, but some sort of light using the four elements. This might eliminate the Teletubbies from being the Four Horsemen if it were not for their very specific colours. Dipsy is green, Laa-Laa is yellow, Po is red, and Tinky Winky is purple, though a purple that is obviously predominantly blue. They correspond perfectly with the colours that represent the four elements.
Earth is represented by green, air by yellow, fire by red, and water is represented by blue.
The colours of the Teletubbies serves as a media for the expression of the Apocalypse. The Teletubbies also provide other proof that they bring with them the Apocalypse. The Teletubbies all wear different symbols on their heads. These symbols, though seemingly just different random shapes, actually are rooted in Christian history. There is much more about the Teletubbies that is disturbing.