The theme is simple enough:
1) White htc "ONE" logo on black bg at splash (splash.zip)
2) fade in white htc "ONE" logo with 8 white loading bubbles transitioning to green before looping x8 until system startup (vzw_bootup.zip)
3) quick green htc "ONE" logo fade-out for shutdown. (hTC_downanimation.zip)
I've included the zip files referenced above as well a an animated .gif preview (full now)
The entire sequence is as follows: fade up white logo, load bubbles, go green, flash three times, repeat loading animation...
For the splash be sure to place in fastboot folder. from the cmd line enter "fastboot oem rebootRUU" and then "fastboot flash zip splash.zip" once the htc logo comes up in RUU mode and then "fastboot reboot" once you're done.
>>>For animations replace the current ones (typically names as per above) in your /system/customize/resource folder and be sure the permissions are set correctly. You'll need root (for animations) and S-OFF (for splash)