Don't know if this will help at all, but here's a pic of a Green Clown Goby (but it's not a solid green). https://www.saltwaterfish.com/site_11...ot_parent_id=4
SWF says it's easy, peaceful, reef safe (if that's a concern), and small.
looking more for a solid green or at least more green, also i was thinking about getting a citron goby and don't know about the compatability of more then one