I love pure black style then I created my own bootanimation.
I change too bootanimation sound for more discreet one.
Always make nandroid backup before flashing anything!
To install bootanimation:
1. Put "Bootanimation eXistenZ Pure Black SP.zip" in your SD card,
2. Reboot recovery and flash zip,
Restart and enjoy!
To uninstall and recover default bootanimation:
Simply delete "bootanimation.zip" located in data / local