I just removed the styling for hyperlinks from the CSS because hyperlinks are blue and underlined because they are hyperlinks.
I don't buy into this whole, "links should be almost indistinguishable from regular content" thing. Blue underlines fit into this minimalist color scheme and so by gosh, you're gonna be able to see those links.
The only think I might change are the hyperlinks in the right side menu. Those lists do a pretty good job of letting you know visually that they can be selected, but for links I insert in my posts, I want them to stand out as you're reading. They are there to encourage you to clicky clicky.