Personally I dislike it. I really don't care about the colours, if they are your brand that's fine. What I do care about:
1: it's slow to load. I'm viewing on an Atom based Lenovo Tablet 2 in the metro IE and each page takes 10 seconds to load. Other sites are snappy. I noticed this with Crackberry a while ago - seems you guys like to fully load up the sponsors ads before you let people interact with the page.
2: it's hard to find anything. Maybe that will change with familiarity but for now the layout sucks for me.
3: trying to use it on the phone (Nokia 1520) is a pain. The previous version allowed me to load the full site, which with the 1520's screen was quite easy to read. This one does not seem to allow that, so I have to bear with the mobile site. When scrolling down, the bar at the top disappears, which is good, but if I scroll up a millimetre it pops back up, forcing the entire page down by its humongous width. Very distracting. Also impossible to get a decent view of a forum page as it's truncated into short little sections, making you hit the page buttons way too much.
I don't see why I should have to download your app to read the site. If you'd design the site properly in the first place I wouldn't. Think I'll opt out for a while and hope it gets fixed before I come back.
By the way, the quick reply box should be twice as deep.