Originally, this water bottle was posted as Grass, but a sharp eyed collector pointed out that it does not have a raised ridge on the bottom and that prompted me to compare it to the Grass water bottles that do have the ridge. (If it matched then we would know the 1977/1978 was when the raised ridge mold was put into use. But it did not match. Further checking and comparing shows that it is Lime. I have amended the title to reflect this.