You have a nice idea there for a style and the colors go well together. I would work on creating your own buttons and icons to complement your theme as the default ones do not go very well.
For a brand new forum, unless you are expecting a lot of activity right away, you have too many forums. The fewer forums you have when starting out, the better as it instantly makes the site look busier without having to try.
I'm not sure about the blue color for hover links as they disappear when you mouse over them. Personally I'd be tempted to have this the same as the normal and visited links color.
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