I noticed after a bit of research. I only used ubuntu briefly but I liked the theme, after about 6 hours I converted to arch linux and fluxbox.
Side note, easy instructions using the Gui Replacer added to OP.
Arch Linux? Really? To be honest, everything that can be achieved with that can be achieved in Ubuntu. Even the Awesome window manager, if you're into that. Even though I'm a minimalist, AL is simply too much. I managed to get all of the gnome essentials downloaded and pretty much everything else I needed, but it's just... faster, with Ubuntu.
By the way, there's
so many more themes than Clearlooks, and with themes with GTK color themes like Clearlooks, you can customize the color.