Thanks Anurag. For a moment I thought I could do this as too. But, alas, I'm a creative director, not a programmer.
Following your instructions I got close though, until I got stuck at the Terminal stage when none of my passwords would work. It was scary for me to work in Terminal to begin with, and I finally gave up and manually removed all the files of SIMBL and SafariStand installed so far.
I am absolutely certain that I will switch to another browser if I can't get favicons on Safari tabs back, it just takes way too much time to tediously scroll back and forth through the tabs bar, looking for the tab I need.
So Apple un-like where everything should just work.