What I can say is that Neowin recommends Themexp.org as the source for your styles and for the hosting of them. On a side note Redmak has now completed the Themes on the forums, They will be renamed from Test (color) to their respective colors in the morning when the site is not so busy. For now you can sneak peak by going to usercp and select a Test theme from the dropdown "Style Set" Just Silver to go now! Main page colors were also updated today (Green, Grey and Red)