Changing your icons around to match your person needs or to match a certain feel you are going for on your device is critical. Sometimes locating just the right style can be nearly impossible. Luckily you have a wonderful group of developers out there on the internet and people just like me that make finding them a little less stressful.
A member over at xda-developers named H0CKEY, has you covered. Although the post was update clear back in June, he still has a very nice set of 450 custom icons available for you to tinker with.
Be sure you have a xda-developers account in order to download the zip file that is loaded full of goodies. Head on over and pick this up if they look like what you are after.