Cosmetically I'd like all four corners of all OSX windows to be squared. This proposed half-solution failed on Mountain Lion 10.8.2. I may have seen a mod that was possible at MacThemes forum; alas ...
For older Mac OS Versions like 10.4 or sometimes 10.5 you can find lots of themes, which change the whole UI. Now my problem is that I'm using Mac OS Lion (10.7.3) and I want to change the UI, because ...