Mike, while we're on the topic of the change in colour, I just thought I'd mention that the new icons are all very similar to each other and hard to tell which one is which at a first glance. I know my eyes are good because I get an eye exam every year but I find it hard to tell which threads I've posted in since the folded corner of the icon is quite hard to see unless you're really looking for it. Now the blue halo that used to be around the folders, that's an eye catcher!
Anyways, just my $0.02