That sounds like the ribbon bar in which case if you install the WindowBlinds beta 10.45 it should look a lot better as the background area behind the bar will match the skin. The tabs themselves will remain as is (though picking up the system colours a bit better)
The Ribbon does match a lot better with the beta Build! 
Another alternative would be "Old/New Explorer". The Ribbon will still show on Paint and the like, where it might be more necessary.
