You could always use the theme maker.
You could getit here: http://www.helsinki.fi/~konttori/Med...ThemeMaker.zip

But in case you just want to go for the smaller fonts and not start piping up your 770, then here's a theme just for you: http://www.helsinki.fi/~konttori/Med...ndys_Theme.zip

How to install?

Unzip directly to your mmc. Disconnect after done (and please make sure it's really done and not flushing some cache... or flashing awaits).

Open xterm
sudo gainroot
cd /media/mmc1/Andys_Theme (notice capital letters)
sh ./install.sh
and then wait a sec and after it's done, close xterm. It will alert that it can't remove existing theme, but that's just because it supports updating themes as well (which is nice when you are testing a theme)
Switch to your new and cool Andys Theme.

I was also kind enough to test the theme, so rest assured that it works.