I liked the navigation, i gives the user an idea of 'what is going on'
As you see the catagories fly past, it makes you feel in control...nice.
As for the colors, well, if the client wants those particular ones then theres no point trying to dull them down. With those kind of colros i would prefer to head towards the 'all or nothing' end of the spectrum - yeah not good desgin advice, but with colors like those its a bit easy to enter damage limitation phase, if you know what i mean ?
) - Well, i liked the way the text moved up as colors moved down, but i felt that there were just too many colord bars flying around - felt like i had popped a happy pill.
) - In my opinion the best, the funny yellow color matched the logo nicely, all the colors were there but more organised, just all looked more flowing than the first.
) - Looked a little empty to me, you know -with all the stuff flying aorund...but not enough substance in the background, if you get me ? - looked like the site might have been left half way through / design change.
I am usually against those kind of garish sites, but as i say, it does look good and i think (although personally i try and stay away from that design) - the second one is by far best, it is organised, yet funky - a nice balance.
As for the logo, well it looked more like a blur / smeer than a vibration - if you see what i mean ?
I agree with Bill T, about the text in the top left...scrap it ! (But there does need to be something there).
I think that anyone who takes on a challenge of building a site with those kinda colors, will need a holiday at the end.
Although my reply probably will not fit in with the 'norm' of replies from pro designers, web developers etc....and i may be an amature, but you have to look at these things objectively. It does not mattter whether we all hate the colors, you still got to like em' if you see what i mean?
Second Link for me !!!!! (has a bit of everything, nice mixture)
Hoped this helped, Snapple