hi...sorry if i'm too late to offer a few ideas...
i too am getting the line through the date at the top right of the page...
your page has two justifications on the left side...i can understand this from a hierarchical point of view, but it looks odd (imo)...perhaps you might try setting everything to have the paddings/margins on the left side...maybe start every with a tiny graphic instead of the caps?
i'm not too crazy about that first cap, but this might look less askew if the padding/margins were all the same...they also indent the following line...
where it says "Posted at..." the text is too small - and i can read small fonts very comfortably. it might be nice also to use some small graphic here to break things up a bit. like a document icon or something - by further differentiating between the post text and the date information it makes for easier reading too...
may i recommend breaking up your individual posts perhaps with a horizontal line (which should have the same width as the individual post itself).
another recommendation, maybe you might go with a header which has a darker background...this too would differentiate types of sections and make it easier to concentrate on the text. obviously, something that would work with green and maroon (is it?).
in terms of colors, you might want to work around a more common pallete - like blues for example. dark blue, light blue, blue and some grays as well (cowpathing!). use a nice complimentary color for the links, hovers, visited...
your margins are quite close to the page edges, but once again, if you reset your padding/margins this might not be an issue any more...
hope it's ok for me to comment like this...i think it's a good start with things for sure.
v