These are my notes from Doug Neiner's talk at the jQuery 2010 conference in Mountain View, California. You can find Doug on Twitter @dougneiner
ThemeRoller 2.0 doensn't have a lot of new features, it just works faster. I was considering calling it SnowThemeRoller.
Overview of ThemeRoller
ThemeRoller allows you to easily apply colors, patterns, opacities, images and textures that you can apply to your site on the fly; once you've configured your theme you can download it and apply it.