I'm currently making my own icon/theme. but it's not so nice to implement yourself without dev mode. (hoping someone will write a better app than themeChanger). However it isn't easy to make sure there is an icon for every app, so for now i've only done stock apps (and one or two extras), if I release it I will take requests for extra icons to add.

example images of what i've done so far (not all of what i've done, but most of it):
http://sean.ozmeyers.com/meego/images/