customcss:

{CustomCSS} is a new kind of a theme, a theme that leaves the style entirely up to the user.

This theme isn’t intended for the CSS newbie, but should be perfect for anyone comfortable with CSS who doesn’t want to trouble themselves with learning Tumblr’s theme engine.

We’ve done our best to implement all the features we think a standard, non-group tumblelog will actually use, and we’ve made sure to add classes and ids to as many elements as possible, giving you plenty of control over the style of your tumblelog.

Interested? Download the theme and start styling!