I've been stalking the "leaks" and waiting for the big reveal, the blue color is my jam but I cant seem to find out why this particular color doesn't offer a 128gb version.
You will have to ask Google that question.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
Because Google chose not to make that color in a 128 GB version. Whether or not they rethink that decision is anyone's guess.