You might have seen some of the pages and wondered how they looked different. Themes would be the answer. There are two new themes which you can choose. A dark one called midnight. And a tans and browns one, called sandalwood (thanks to allen for suggesting this theme) . You could go change your theme here.
We are still optimizing our pages and our architecture for letting users define there themes. Meanwhile if you have any suggestions for new themes they are welcome 
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