I did some default theme CSS overriding today. It's nothing big, nothing special but personally I like the result better than vanilla ISPConfig.
Just copy the CSS at the end of the default styles.css in /usr/local/ispconfig/interface/web/themes/default/css.
The logo is from http://www.howtoforge.com/forums/sho...highlight=logo
- so all credits go to him.
It's still not what I expect from the UI...but holiday starts soon and I might have time to create one from scratch (the one I posted once).