The graphic which shows whether or not there is new posts in a forum looks quite strange when looking at them from a subforum view rather than from the forum index ([url="http://www.gamebanshee.com/forums/other-stuff-7/"]this[/url], as opposed to [url="http://www.gamebanshee.com/forums/"]this[/url]).
It looks like it's because the forum information box and that of the box that the indicator is normally in are different colours, and the indicator is in the forum information box on the subforum view.
I am still not seeing any color mismatch between the indicators. Try taking a screenshot to indicate it. The two pages look identical to (in that regard) which I'll attribute to the same code prodivide the two views.