The only icon pack/theme I ever used/like was GlasKlart (but I liked it ALOT) at »forums.macrumors.com/showthread. ··· =1312044
but I got tired of manually updating newer/less popular icons and/or waiting for the entire icon pack to be updated. I haven't checked on the status of it in years...
(Reading the tail end of that thread there, it seems like this is the place to get the latest, etc: »github.com/glasklart/hd
♬ Dragon of good fortune struggles with the trickster Fox ♬