Just to inform you my leap from colorOS to CM11s worked!
I have a 64gb white OPO china import, and what i did was taking the original rom
"cm-11.0-XNPH25R-bacon-signed.zip" and renamed it "Update.zip" than stuck it into phones storage root folder!
powered off > then reboot while holding power and volume down to enter stock recovery..then update from SD and selected the Update.zip..
let it run the process and afterwards> first cleared cache and user data before reboot> rebooted and oila!!
full stock cm11s rom and all 64gb are available..not sure on 4g LTE as i don't got that in my contract!
Feel free to try, but don't blame me! its your own risk!
but i bed since i didn't do any crazy stuff to it , its the safest way!? not sure how to go back to ColorOS again, but to me that's completely unnecessary ..