I've changed the blue colour to the same one as the old forum uses, much less garish.
I'm sorry if you don't like the look, give it a bit of time. Unfortunately when we make design changes there will always be people who prefer or it who don't prefer it, hard to make everyone happy!
The unquestionable fact though is it's a lot faster, has a lot more features and is far more reliable (no more session timeout errors for making posts etc)