Clear Rounds Android Icon Set Comes with 14 PNG icons and one PSD file which is labeled and neatly organised. If you download or like it, please do give it a fav or a comment. It helps a lot Download here : [link]
Hey, what do you mean by the clock? If you mean the clock on the statusbar, I usually hide the whole statusbar. But if you mean how you can hide or move the clock to the center, you can do that on various different ROMS, I'm using Codename Android, it let's me do that. But pretty much every other ROM with an average amount of interface settings can do that.
Haha, if you do it right and follow the instructions, nothing bad will happen. But then again, if you have a Galaxy Nexus, it's almost if not, unbrickable. I used to brick my phones all the time, not with the Galaxy Nexus, no matter what I do wrong, it always ends up working