I think I would go with a style that is visually more appealing. I would also opt for colours that compliment the theme of your forum (say the colours of the irish flag) and somehow implement then intergrate them in to a style.
The logo text looks very jaggy and I would probably enable some kind of anti-aliasing just so the look smoother.
I noticed a nav menu that's situated at the top of the browser and follows you as you scroll. This could get annoying for the user after a while.
Like I said, i would opt for something in the way of a n irish theme and opt for colours that are more appropriate.
Goodluck with your forum.