Catching Elephant is a theme for Tumblr.Please look through all the answers here before asking a question. The same questions keep coming up. A lot of customisation can be done with custom css. Try googling css background for example.
The theme uses quite a lot of CSS3 which only works in the latest versions of Safari, Chrome and Firefox. But it reverts quite well. It looks a bit like balls in IE6, but doesn’t everything? The content is still visible and laid out roughly like it should be.
Bugs et cetera can be sent to firstname.lastname@example.org.
The Tumblr ‘portrait’ is a maximum size of 128px. I wanted a 300px image so instead of pulling the ‘portrait’ I’m using the replace image feature. A 300px wide photo can be uploaded via the Appearance tab in Customise. If you do not upload a photo, the layout simply reverts to a version without a photo.