Yeah well, It's really hard to point out what really looks odd about those colors, but I guess that It's probably the overuse of brownish colors, or at least the wrong tone of brown. All the colors on your website blend in pretty nicely, but maybe that's it's main problem, it doesnt have any contrast or "zone highlights" if I make myself clear.
Here's some suggestions of color usage that look way much more appealing, to my eyes at least.
http://newdawn.paynereactor.com/index.html
http://fc46.deviantart.com/fs38/f/2008/ ... no_erd.jpg
http://fc57.deviantart.com/fs18/f/2007/ ... lbudah.jpg
http://fc07.deviantart.com/fs23/f/2007/ ... xpture.jpg
(Forget about the theme of the pics, just look at the colors, and how they "play" with each other on a layout)
Tastes and opinions are a very complicated matter, what can look awesome to me, may look terrible to other person eyes, so it's all very relative, and this post is just to point out my personal opinion.
PS. Oh and yeah, those lines on the banner really are annoying and unappealing.