Question Can i get vanilla Android 4.4 on LG Optimus L70?

I want to get the LG Optimus L70 from Metro PCS. I see it has KitKat on it already, but it seems there is a rom on top, and i dont really like the look. So i wanted to get vanilla Android 4.4 on it, but im new to Android and i dont know if i can just install the vanilla, original version onto that phone... do i have to wait for a port or rom developed by the carrier or some other 3rd party?

Please help! Thanks in advance.