I think those designs look great! However, there are a few minor things that got my attention. First, the type for the window title: I feel that is a little out-of-era, more 19th century or gothic than classical. I do not have an alternative ready, although it would probably a non-italic roman font (Oh, I see now you tried that first, compared to the earlier designs this does look more stylish). Second, when looking at the Diplomacy window, I'm not sure the 'Player 4' text in white would be readable on the yellow background on all kinds of display since the darker outline has been omitted (or at the least is very faint). A third thing, on the same Diplomacy window, I do not really like the fade/shadow behind the small checkmarks. Personally, I think it would be clearer and look sharper with larger X's and a reduced glow. It's definitely an improvement over the older design, so keep going