[@Phoenixflambe](/forums/pony/topics/mlp-g5-discussion-and-speculation-thread?post_id=5269215#post_5269215)
You're welcome to suggest names [in the naming thread](/forums/pony/topics/naming-background-ponies-thread)
Page 194 has several G5 characters up for naming suggestions, but I don't think the green pony is one of them yet.