Sometimes they (mythbusters) are wrong...

In the program that identified the thermal covering (the outside
wrapper of the Hindenberg) as the likely source of the start of the
fire, they had the advantage of having a scrap of the ORIGINAL skin.
A spark applied to that ignited and rapidly burned.

Hydrogen burns with a blue (nearly invisible) flame. The Hindenberg
definitely burned orange/red, which is more indicative of other
materials....

On Feb 14, 2007, at 2:53 PM, Michael Elliott wrote:

> They also pointed out that if actual
> thermite covered the Hindenburg, it would make the airship too
> heavy to
> fly."