So, I run a blog focused on economics and technology. I've jumped around various platforms, but I'm using my own WordPress blog for now. Since I switched to WordPress, I've been using a theme based on Jon Gruber's Daring Fireball (I'm sure you all know it). I seriously love the theme, but I feel bad about using something based on his design. Does anybody have any recommendations for themes like Gruber's, i.e. minimalist, dark, yet easy on the eyes?