I think it just means that if you have 3 hens, expect only 2 eggs a day. At the height of the season, ours lay about 6 days out of 7, but not yet.
The green tinge could be due to Araucana ancestry in one or some of your hens. There are at least two hybrids, probably more, from Araucanas - we have Columbines, two of which lay blue eggs and the other khaki. Supposedly, if the cock used to sire the hybrid is from a white egg-laying breed, the eggs will be powder blue, but if the sire is from a dark egg laying breed the eggs will be green or khaki.