AnimeLight is a free premium WordPress theme with options page and supports the post thumbnails. Suitable for any niche specially for manga or anime websites or blogs.
This theme was originally designed by styleshout. It's a very fluid design with nice complementary colours. I tried to adapt the theme to BE.NET as closely as possible, but I had to take some creative liberties with regards to some of the side panel controls.
A nice, universal design tuned into the web 2.0 style. The code is clear and maintains standards, meaning that it is valid XHTML 1.0 Strict (or XHTML 1.1) and CSS2.1.