A number of Google reader themes have popped onto the scene over the last couple of years, many unfortunately only last a few months before Google makes a UI tweak themselves. Helvetireader is probably the most popular, but the latest one which I happened to spot on Userstyles.org yesterday is titled “Google Reader: Mac OS X Snow Leopard“. It’s likely to have absolutely nothing to do with Snow Leopard, but that takes nothing away from how gorgeous the result is.
To install, ensure you have Greasemonkey for Firefox installed or GreaseKit for any webkit browser such as Safari. Then click here to install the main userscript. If you’d like favicons for each site too, you can get those here.