This will change your stock rom's appearance. Just follow instructions to install this properly.
What you need to have is basic knowledge in using CWM.
How to install.
1. Download the zip
2. Place it on root of sd card
3. Turn off phone and boot to recovery (power+home+volume up)
4. choose update from sd card
5. select the downloaded zip and flash it
6. reboot phone and enjoy.
give love to dev