Firefox 17 here. Mostly blank page, even after allowing whatever wanted to run in Noscript. But the page started working (although, without colours for some reason) when I disabled Noscript and restarted firefox.

Huh. I'm a NoScript user, so that might be it. Thanks.

For me the animations work on Firefox 19 (Aurora) on Windows, but no colors.

Firefox 17 on Ubuntu 12.04. Works fine for me.

Doesn't work for me on Firefox nightly either.