It looks like your browser is missing some features, that are needed for enjoying "fellow traveler".
css3 gradients not supported
css3 transforms not supported
css3 transforms3d not supported
css3 transitions not supported
opacity not supported
rgba color not supported
html5 audio not supported
If you want to watch this anouncement or the whole project in June, try updating your browser to the newest version or download one of the following. Anyway the experience is best in webkit browsers (e.g. chrome or safari).