Don,
As you said, there's really not a requirement for the GEC to be identified, but I've had inspectors beat me up on this.
Some want green, the others white.
(It's a real pain in the neck to go back to a job to only to change a 6" piece of tape.)
I've come to the conclusion to just strip it for the entire exposed length, and then they really can't turn it down.
(Bummer is, I feel bad about leaving any bare conductor where it could accidentally contact any live conductor)[by a clumsy]
What's a good fix? With some consistency??
