Personally I havent used Superdocker so i cant speak to it. Tinkertool, as someone already said, can't do anything to you icons but it can help adjust your dock in various ways as well as other things on your mac (start-up programs, show hidden files in finder, changes default fonts, etc) I use candybar as well to change all my icons, well worth the 30 bucks in my opinion.
Oh and in Honor of the Felt 3: A Tribute to Rosie Perez album release i have once again changed my desktop..Got rid of my Geektool scripts for now as the desktop is busy enough...Check It!