Sidebar posts

I'm loving Catch Everest. This isn't a unique problem to this theme, but I noticed that links in the sidebar can be a little confusing if a link wraps to the next line. In the sidebar, is there a way to (1) space out separate posts, (2) add bullet points for posts, or (3) put thin lines between each post? Any of these three options would make the separate posts more discernable. Also, is there a way to add a really light gray background to the sidebar area? Thanks!