Nest hover rule inside the link block

Hello,

I'm using your theme for my new octopress blog, and I noticed that if I hovered over any part of the sidebar, all the links changed color.  I updated the CSS file so that individual links change when hovered over directly.  Based on your CSS, the links are not colored to look like links, so I left it that way, but I can also change the file to display link colors instead of black text if you want.