I like change, but I also like the current forum. If anything should change, I'd go for a subtle one, the primary color for the text on the forums is red, which is fine it's the zimbra colour, but its a little harsh.
So, given that Yahoo like purple, why not simply drop the red down towards purple, sort of midway between the two colours, this would be a little nicer on the eyes I think.
Other than that, it's fine, so I'm not sure how to vote
