Well,
As Ecua said I also think that the columns are too separated.
About navigation, ergo, what about adding some NavBar right under the Header ? I can design three icons : RichList, Addresses stats and CAPT stats.
Or what about showing everything at the same time?
For example the general stats at the top, then the search form for a specific address, and then the first page (top 50).
At the bottom, there could be either the pager as it is now, or a "Show more" button or link to load more via jQuery.
About the color, I don't know but I think a darker one (even black) would be easier to read.
.
Including that, it would probably be too crowded to show everything on one page.