Also got Nova Launcher, which is awesome, got a black theme, so everything is black. Even my plastic case is black (my phone's blue, though, but you can't see it). Sometimes a software upgrade is all you need.
Paired up with Zooper widget, the amount of customisation you can get for the interface is amazing, not forgetting all the nice icon packs out there. A good homescreen is nice to have, although to get the most you'd need to buy both of them which comes to ~£4, so you'd have to be willing to pay that for what is essentially making a nice homescreen and interface.