The style looks okay, here are my comments.
You should try to avoid having the text on the menu buttons move when they are hovered over or they are the current button, it would look better if they were just highlight and preferably a different colour for the current button and the hovered buttons.
The green on black text looks odd.
The orange text down the bottom on its own also looks a bit odd, maybe you could put them into boxes to make them stand out?
I have to agree, the colors are hard to look at after a while. Maybe some more subdued colors will work better. If you like yellow, orange and green, perhaps you can still use those, just not the super bright ones.
the orange theme looks aight except the green text on the left...and you should make the header image fit the whole header area....cos it's a lil smaller in size...