@Bratag, thanks man.
I have just updated the first post and the script of course. Now it changes the files of your current theme and makesNO backups

P.S. I also tryied to do smth fancy with the slider, but that didn't go too well. I still have a few ideas. But feel free to throw some in here.
P.P.S. Please post bugs, if you have some

UPDATED FIRST POST